# Identify Constant Rate of Change (Grade 9)

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## Identify Constant Rate of Change

1.

A garden hose is filling buckets at a rate of 5 gallons per minute. This represents a constant rate of change.

- True
- False

2.

Sudhan and Jared are on a Ferris wheel. They record their height above the ground over time. It will represent a constant rate of change.

- True
- False

3.

The equation [math]y=3x+5[/math] represents a constant rate of change.

- True
- False

4.

A physics class takes a field trip to an amusement park to ride roller coasters. The students measure the speed at which they travel while on the roller coasters. They will discover a constant rate of change.

- True
- False

5.

The equation which describes a rock being dropped from a cliff shows a constant rate of change.

- True
- False

6.

If Katie has a special savings account where she deposits $30 each month, her account balance will increase at a constant rate.

- True
- False

7.

If a train is traveling at 65 mph, the distance it travels every minute represents a constant rate of change.

- True
- False

8.

Kevin works for a used car lot and earns minimum wage plus a percentage of any sales he makes. He deposits all of the money he makes on commissions into a savings account. Kevin's account balance represents a constant rate of change.

- True
- False

9.

A car leaves the resort and ascends a winding road to the ski hill while maintaining 45 mph. The line of sight distance that the car is away from the resort is changing at a constant rate.

- True
- False

10.

Heather and Jamar do an experiment in chemistry class in which they burn a log and track the mass of the log as it burns. They conclude that the equation [math]m=-.8t^(1/3)+5[/math] describes the mass of the log over time as it burns. The log loses mass at a constant rate.

- True
- False

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