Cumulative Review

Is the function linear or nonlinear.

y = 2x + 4

• linear

• nonlinear

Is the function linear or nonlinear.

y = x/2 - 3

• linear

• nonlinear

• linear

• nonlinear

Tell whether the function is linear or nonlinear.

• linear
• nonlinear

Tell whether the function is linear or nonlinear.

• linear

• nonlinear

Rafael bikes home from work. The graph shows Rafael’s distance from home as a function of time. What are the initial value and rate of change for the function, and what does each value mean in this situation?

• The initial value is the distance from home at time zero, and the rate of change is the speed at which Rafael bikes home.

• The initial value is the time it takes to reach home, and the rate of change is the total distance traveled.

• The initial value is the speed at which Rafael starts biking, and the rate of change is the time taken to reach home.

• The initial value is the total distance from work to home, and the rate of change is the decrease in time as Rafael gets closer to home.

The graph shows the distance a dog runs over time. The equation d = 13t gives the distance a cat runs in meters, d, as a function of time in seconds, t. Which animal runs faster? How much faster?

• The dog runs faster.

• The cat runs faster.

• The dog and the cat run at the same speed.

Tell whether the interval 0-2 in the graph is increasing, decreasing, or neither, and whether it is linear or nonlinear.

• Decreasing, linear

• Increasing, nonlinear

• Neither, linear

• Increasing, linear

Tell whether the interval from 5-8 in the graph is increasing, decreasing, or neither, and whether it is linear or nonlinear.

• Decreasing, nonlinear

• Increasing, linear

• Neither, nonlinear

• Increasing, nonlinear

What is the slope of the line in the graph?

• 5

• 2

• 1/2

• 1/5