1. Check it out! 1.3.1: Creating and Graphing Linear Equations in Two Variables 1

2. A cell phone company charges a $20 flat fee plus $0.05 for every minute used for calls. 1.Make a table of values from 0 to 60 minutes in 10- minute intervals that represent the total amount charged. 2.Write an algebraic equation that could be used to represent the situation. 3.What do the unknown values in your equation represent? 2

3. 1.Make a table of values from 0 to 60 minutes in 10- minute intervals that represent the total amount charged. 1.3.1: Creating and Graphing Linear Equations in Two Variables 3 Minutes usedTotal amount charged ($) 020 + 0(0.05) = 20.00 1020 + 10(0.05) = 20.50 2020 + 20(0.05) = 21.00 3020 + 30(0.05) = 21.50 4020 + 40(0.05) = 22.00 5020 + 50(0.05) = 22.50 6020 + 60(0.05) = 23.00

4. 2.Write an algebraic equation that could be used to represent the situation. y = 0.05x + 20 3.What do the unknown values in your equation represent? x represents the number of minutes used, and y represents the total amount charged. 4 1.3.1: Creating and Graphing Linear Equations in Two Variables