1. 2.1.1 Calling Plans Unit 2: Linear Relationships SWBAT: Compare calling plans by using graphs, tables, and equations

2. Calling plan options : Long-distance Company A has a monthly fee of $5, plus 4 cents per minute Long-distance Company B offers 5 minutes per dollar with no monthly fee Long-distance Company C has a flat monthly fee of $8 Long-distance Company D Minutes Used51050100 Total Cost ($) $3.30$3.60$6.00$9.00

3. 1. a. What is Plan E’s cost per minute? Describe the method you used. b. Use another method to determine the cost per minute. 2. Use a color and add the graph of Plan A to the graph of Plan E on LabSheet CP1 (see next slide). Be sure to label the graph lines of the plans and create a key.

4. Unit 4 – Calling Plans LABSHEET CP1

5. 3. Using the methods you developed in Question 1, prove that the graph for Plan A represents a charge of 4 cents per minute. 4. Compare the graph of Plan A with the graph of Plan E. Which plan has a greater cost per minute? Explain how you can tell this just by looking at the graph.

6. Homework: Day 2 task sheet (5 – 8)