Lesson 10: Connecting Equations to Graphs (Part 1) Cool Down: Kiran at the Carnival

Question

1. Which graph represents the relationship between the quantities in this situation? Explain how you know.

A

B

C

Answer 1

Graph A would make sense since we are talking about the cost of number of games and the number of rides at the carnival. This is directly related since they are changing at the same time.

The number of games is the independent variable.

The number of rides is the dependent variable.

For each game you played will determine how much it cost to go on a carnival ride.

Here is the equation: y = 0.25x + 12

For each game you played, you will pay an increment of 25 cents to go on a carnival ride.

(0, 12); (1, 12.25); (2, 12.50); (3, 12.75); etc.