Real-world situations including two or more linear functions may be modeled with a system of linear equations. If you would like the student to do independent research on the different types of cell phone plans following are websites for Verizon, ATT, Sprint and TMobile to begin research. Graph the results of the monthly costs with the number of text messages on the x axis and monthly costs on the y axis. Linear equations, coordinate planes, and systems of equations are covered in this extremely well-organized instructional activity. All three plans start with a basic monthly fee; in addition, the costs for Plans A and C increase at a steady rate based on the number of text messages sent per month. Generally speaking, those problems come up when there are two unknowns or variables to solve. Then write a system of linear equations for the two plans and create a graph. Once the student is confident, have him/her complete the task using the students media of choice. In this project, you will be choosing between two real life situations and then using systems of linear equations to decide what to buy. Students then move to analyzing different cell phone plans by creating a table, equation and graph of the plan. System of linear equations System of linear equations can arise naturally from many real life examples. Big Idea The purpose of this lesson is for students to understand how to analyze a system of equations to determine when a plan is cheaper, more expensive, … Building Systems of Linear Models. Cell Phone Plans System of Equations Project. If your usage exceed 300 minutes, you pay 50 cents for each minute. This task presents a real-world problem requiring the students to write linear equations to model different cell phone plans. Creative Commons Info. The graph for the Plan B equation is a constant line at $y=90.20$. Step 1. to solve equations and inequalities. To solve the system of equations, you need to find the exact values of x and y that will solve both equations. The two situations are: 1. They identify the necessary information, represent problems mathematically, making correct use of symbols, words, diagrams, tables and graphs. They will use their data to create linear equations and graph these equations using Desmos. Students write and graph systems of linear equations modeling their data and present their findings via graphing and a written statement explaining to their customer which plan they should choose and why. Data and source of data c. System of linear equations with explanation of the y-intercept and slope d. Solution to the written systems (all work shown). We can write the total cost per month as $$y = 29.95 + 0.10t$$ 2. Together write a linear equation, using the students media of choice,  which represents the monthly cost if the user sents. Rationale for choosing cars b. to find the solution to the written system. This task was submitted by James E. Bialasik and Breean Martin for the first Illustrative Mathematics task writing contest 2011/12/12-2011/12/18. 2. This complete unit is ready to copy! After Log On SWBAT graph lines that represent 2 cell phone plans and solve the system of equations to determine the best plan. Cell Phone Plans Situation: You have graduated from high school Loading... Save for later. Tools are available and useful to students during their analysis, and provide opportunities to make sense of the different rate plans. Apply: Students will apply their knowledge of the cell phone plans and systems of equations in a Google Doc. Students analyze a cell phone bill to create a linear equation of how to calculate the bill. This is a project that can be used in Algebra 1 or Algebra 2 courses for the unit covering Systems of Equations. Note that the last three pieces of information describing the plans are superfluous; it is important for students to be able to sort through information and decide what is, and is not, relevant to solving the problem at hand. Two cars, comparing the base price (the cost of the car) and the cost of driving the car. Therefore, we can find a linear equation for each plan relating $y$, the total monthly cost in dollars, to $t$, the number of text messages sent. Answer. Determine which plan has the lowest cost given the number of text messages a customer is likely to send. The coordinates of these points correspond to the exact number of text messages for which two plans charge the same amount. Systems of linear equations project (III): Cell Phone Service As an FSI scholar, you got a summer internship with a major cell phone service company. About this resource. In addition, each text message costs 10 cent or \$0.10. $$ \begin{align} 0.1t + 29.95 &= .05t + 49.95 \\ .05t &= 20 \\ t &= 400 \quad \text{Text Messages} \end{align} $$, $$ \begin{align} 0.05t + 49.95 &= 90.20 \\ 0.05t &= 40.25 \\ t &= 805 \quad \text{Text Messages} \end{align} $$, Plan A costs a basic fee of \$29.95 per month and 10 cents per text message, Plan B costs a basic fee of \$90.20 per month and has unlimited text messages, Plan C costs a basic fee of \$49.95 per month and 5 cents per text message. The students will choose two companies, choose two similar plans, choose variables (this may vary, so (The lines are parallel.) Students compare cell phone plans by analyzing tables, graphs, and equations in this sample lesson. Cell Phone Plan Background Background James have graduated from high school and moved away to college. To visually compare the three plans, we graph the three linear equations. MDUSD, linear functions, systems of equations Created: Jul 28 ... Free. They will create a short Infographic (via Google Drawings or Canva) or Google Slide to display their information. Document all work done. Solving Systems of Linear Equations A system of linear equations is just a set of two or more linear equations. _____ Graphing calculators will be used both as a primary tool in solving problems and to verify algebraic solutions. Systems of Linear Equations- Cell Phone Plans lesson plan template and teaching resources. 20 minutes. In addition, each text message costs 10 cent or \$0.10. The project idea is that the students are helping the PTA be educated on how to select the best cell phone plan. Your boss asks you to visually display three plans and compare them so you can point out the advantages of each plan to your customers. The second plan has a $30 sign-up fee and costs $25 per month. When is Company T a better Value? We can estimate that $t= 400$ is the cutoff point to go from Plan C to Plan A, and $t=800$ is the cutoff point to go from Plan A to Plan B. Preview. Systems of Linear Equations- Cell Phone Plans (no rating) 0 customer reviews. Step 2. They will analyze all three plans through a series of graphs and questions. They will write and solve systems graphically and alg Use the methods we have been studying to determine which plan is better based on the number of nights you decide to stay if you had $1500 to spend for this vacation. In two variables ( x and y ) , the graph of a system of two equations is a pair of lines in the plane. A system of linear equations is a system made up of two linear equations. Students find the best cell phone plan given different customers by exploring several cell phone companies and their options. My students would run into the room and right over to the windowsill, excited to see their grass and about taking the day's data. We can write the total cost per month as $$y = 29.95 + 0.10t$$, Plan B has a basic fee of \$90.20 even if no text messages are sent. Plan A has a basic fee of \$29.95 even if no text messages are sent. Engage your students with effective distance learning resources. When the student is confident in the ability to write the linear equation have the student calculate the monthly cost if 100, 200 and 300 text messages are sent. Since Mr. Byan is tech savvy and a ... A cell phone plan offers 300 free minutes for a flat fee of 20 dollars. 6 - Solving Systems of Equations Interactive Notes Activity - This set of notes is ready to go in an interactive notebook. Skip to section navigation, Teaching Science to Young Children With Visual Impairments. Finally, each text message with Plan A costs more than with Plan B, therefore, the slope of the line for Plan A is larger than the slope of the line for Plan B. This video explains how to solve an application problem using a system of equations. Watertown, MA 02472, FAQAboutContact Perkins eLearningVisit Perkins.org, Sign up for email updates Subscribe Follow Us, https://www.sprint.com/en/shop/plans/unlimited-cell-phone-plan.html?INTNAV=TopNav:Shop:UnlimitedPlans, https://www.t-mobile.com/cell-phone-plans, Solve simple algebraic equations with one variable using addition and subtraction, Four Quadrant Graph Paper - Bold lined or raised, Markers, dots, tape to connect dots, straight edge, Comparing Cell Phone Plans - Instruction sheet, Sprint Wireless Website with Plan Details, TMobile Wireless Website with Plan Details, Review Vocabulary: Linear equation, variable (some number). Two cars comparing … For a small number of text messages, Plan A is the cheapest, for a medium number of text messages, Plan C is the cheapest and for a large number of text messages, Plan B is the cheapest. This project asks students to choose two different cell phone companies to compare. 5) Compile all documentation for book of the project. 5 - Linear Systems Interactive Notebook Unit - If you want an entire interactive notebook unit for systems of equations, look no further. Typeset May 4, 2016 at 18:58:52. Plan A has a basic fee of \$29.95 even if no text messages are sent. The same type of analysis can be done for cable services, bundled or unbundled, streaming services, group dinners or rental costs. His parents has decided him to bought a new phone ( Iphone 5s Gold ). f) solving real-world problems involving equations and systems of equations. Creative Commons By determining the intersection point of two plans, students can make informed decisions. I feel like it is really important for students to really understand what they are doing when they solve a system of equations. Review with student the question:  A cell phone plan costs $45.00 per month with the cost for texting an added $0.25 per text. V. OBJECTIVES: • Students will use their knowledge of linear systems to determine the most cost efficient scooter rental plan for their families. This presentation provides students with opportunities to engage, explore, apply, and connect the algebraic concept of systems of linear equations by using cell phone plans. In this case the total cost per month, $y$, does not change for different values of $t$, so we have $$y = 90.20$$, Plan C has a basic fee of \$49.95 even if no text messages are sent. In order to complete this project, start by selecting one of the situations below: Cell Phone Plan: Your parents have decided that you should pay Created: Jul 28, 2015. In this project your group will be choosing between two real life situations and then using systems of linear equations to decide what to buy. The students are required to find the solution algebraically to complete the task. 2. Solve linear … 175 North Beacon Street A system of linear equations is a set of two or more linear equations with the same variables. In each case the basic fee is the vertical intercept, since it indicates the cost of a plan even if no text messages are being sent. (y=45+0.25t) The two situations are: 1. I plan this Practice warm-up as a follow up from the previous day's lesson to have students successfully use the Substitution Method to solve a system of equations during this lesson. At an intersection point of two lines, the two plans charge the same amount for the same number of text messages. Your job is to prepare a summary that compares two of your company’s calling plans to help an FSI staff member (Mr.Byan) decide which plan is best for him. Author: Created by elcarbo. From the graphical representation we see that the “best” plan will vary based on the number of text messages a person will send. Cell phone plans, comparing monthly fee and price per text message. In addition, each text message costs 5 cent or \$0.05. Systems of Linear Equations Project Algebra 1 Advanced Mod 10-11 The best way to understand the value of learning about Systems of Linear Equations is to see how you can use them in your life. We can write the total cost per month as $$y = 49.95 + 0.05t$$. Because we are looking for the number of text messages, $t$, that result in the same cost for two different plans, we can set the expression that represents the cost of one plan equal to the other and solve for $t$. Two cars comparing the base price (the cost of the car) and the cost of driving the car. For example, + − = − + = − − + − = is a system of three equations in the three variables x, y, z.A solution to a linear system is an assignment of values to the variables such that all the equations are simultaneously satisfied. Remember, when solving a system of linear equations, we are looking for points the two lines have in common. Systems of Equations and Inequalities You are a team of nutrition counselors working for a major hospital. Cell phone plans comparing monthly fee and price per text message. a. Attribution-NonCommercial-ShareAlike 4.0 International License. This is a lifetime skill for the student. Algebra -> Coordinate Systems and Linear Equations -> Linear Equations and Systems Word Problems -> SOLUTION: Jasmine is deciding between two cell-phone plans.The first plan has a $50 sign-up fee and costs $20 per month. This linear equations project was one of my favorite things about teaching Algebra. So check out these 15 systems of equations activities that will help students understand and practice finding the solution to two linear equations. Plan B has a lower basic fee (\$29.95) than Plan A (\$49.95); therefore it starts lower on the vertical axis. In this project your group will be choosing between two real life situations and then using systems of linear equations to decide what to buy. The project is so simple - students plant seeds, grow grass, measure, plot growth, find lines of fit - but the learning opportunities stretch the project so much farther. For example, the sets in the image below are systems of linear equations. Attribution-NonCommercial-ShareAlike 4.0 International License. To find the exact coordinates of each intersection point, we need to solve the corresponding system of equations. The Cell Phone Plan Comparison project has students comparing four (4) cell phone plans and determining which one is best for their needs in terms of talking and texting. At how many minutes do both companies charge the same amount? Typically, there are three types of answers possible, as shown in Figure \(\PageIndex{6}\). Prepare a written plan for the doctors suggesting nutrition requirements that should be included in the diets for patients with a specific illness. In mathematics, a system of linear equations (or linear system) is a collection of one or more linear equations involving the same set of variables. Review Vocabulary: Linear equation, variable (some number) Review with student the question: A cell phone plan costs $45.00 per month with the cost for texting an added $0.25 per text. Cell phone plans comparing monthly fee and price per text message. Together write a linear equation, using the students media of choice, which represents the monthly cost if the user sents t messages. Preview and details Files included (1) doc, 257 KB. Skip to content Choosing a cell phone plan using linear equations perkins system of project with rubric ex compare plans write to model and data usage fill find equation systems problem in real life their solutions math vacation dear inequalities word problems harder Choosing A Cell Phone Plan Using Linear Equations Perkins System Of Equations Project Cell Phone With Rubric Ex… Read More » Therefore, we can find a linear equation for each plan relating $y$, the total monthly cost in dollars, to $t$, the number of text messages sent. Looking at the graphs of the lines in the context of the cell phone plans allows the students to connect the meaning of the intersection points of two lines with the simultaneous solution of two linear equations. To determine the range of “small”, “medium” and “large” numbers of text messages, we need to find the $t$-coordinate of the intersection points of the graphs. There are three possibilities: The lines intersect at zero points. The two situations are: 1. We conclude that Plan A is the cheapest for customers sending 0 to 400 text messages per month, Plan C is cheapest for customers sending between 400 and 805 text messages per month and plan B is cheapest for customers sending more than 805 text messages per month. Licensed by Illustrative Mathematics under a Use your knowledge of solutions of systems of linear equations to solve a real world problem you might have already been faced with: Choosing the best cell phone plan. A customer wants to know how to decide which plan will save her the most money. You are a representative for a cell phone company and it is your job to promote different cell phone plans. And he have to stick to a strict budget and plan to spend no more than $40 Project Mission Systems of $ y=90.20 $ system of linear equations project cell phone plan a basic fee of \ $ 29.95 even if no messages... Including two or more linear functions may be modeled with a system of equations, look no.! 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