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5.3: Function Rules, Tables, and Graphs Modeling Functions There are three ways to model a function: 1) Rule (equation) shows how variables are related 2) Tables identify specific input and output values 3) Graphs gives a visual picture Remember: Domain: Independent variable (inputs) graph on horizontal axis Range: Dependent variable (outputs) graph on vertical axis Modeling Functions Ex1) Model the function rule using a table of values and a graph. 1 y x2 3 Modeling Functions Ex3) Model the function rule using a table of values and a graph. y x2 4 Modeling Functions Ex4) Model the function rule using a table of values and a graph. y x 2 1 Modeling Functions Ex2) At the local video store you can rent video games for $3 each. It costs you $15 up front for the video game membership. a) Define the two variables in this situation and write a function rule to represent your total cost. Use function notation a) Make a table of values and a graph using the function rule. a) How much would your total cost be if you rented 13 video games in a month? Homework #36: Page 266 # 1-6, 10 5.3: Function Rules, Tables, and Graphs