Presentation on theme: "Sketch your examples, labeling both axes"— Presentation transcript:
1 Sketch your examples, labeling both axes ZLearning ObjectiveTo be able to construct linear graphs arising from real life problemsTo be able to discuss and interpret graphs modeling real situationsCell Phone Data?Working in your teams discuss what data about mobilephones could be represented on a straight line graphYou need to identify two specific examplesSketch your examples, labeling both axes
2 Pay as you Go Cell Phones: Independent Work ZPay as you Go Cell Phones: Independent WorkWorking independently, work through the instructions on the sheetWhen instructed, discuss your answer for step 4 with your teamHelp your team mates to complete their sheets
3 Pay as you Go Cell Phones: Team Work ZPay as you Go Cell Phones: Team WorkDiscuss the questions on the sheet in your teamsEnsure you all complete your own sheet with your agreed answersCreate your own question based on the data provided
4 Pay as you Go Cell Phones 1 Straight Line GraphsPay as you Go Cell Phones1Name:Step 1: Complete the four tables on sheet 2 for the following Pay as you Go Cell Phone deals:Phone is $50Calls 35cents per minPhone is $45Calls 40cents per minPhone is $60Calls 30cents per minPhone is $80Calls 10cents per minStep 2: Using the values in your tables, plot each of the Cell Phone deals on the graph on sheet 2, take care to ensure you plot the points and draw the lines accurately (use a different colored pencil for each line). Ensure your lines and axes are labeled correctly.Step 3: Write down the equation of the line (in the form y = mx + c) for each of the Cell phone deals:O2:Virgin:T-mobile:3:Step 4: Explain below why it is important to identify the number of calls you are likely to make before selecting a Pay as you Go Cell phone deal. Use examples to illustrate your point.
5 Pay as you Go Mobile Phones 3 Straight Line GraphsPay as you Go Mobile Phones3Name:Discuss the answers to the following questions in your team, then write down your own answers.1. How many minutes of calls do you need to make for the 3 phone to be the cheapest deal?2. Jane estimates that she will make 7 minutes of calls per month over a year.a. Based on your graph, what phone deal would you recommend she purchases?b. How much will this cost her?c. If she chose an alternative provider, what is the most it could cost her? Who is thiswith?d. Calculate your answers to b and c using the relevant equations:3. Hiresh needs a phone for 6 months and he estimates that he will make between 90 and 130 minutes of calls in that time. What phone deal would you recommend he purchases and why? Provide examples of call costs in your answer.4. Grandpa Bob wants to buy his first mobile phone, he has $200 in total to spend on the phone and calls over 2 years. What is the maximum number of calls he can make? Which provider is this with? Show your working.