Walk This Way?

The difference between a linear function and a nonlinear function ...

• One is curved and one isn't.
• One has a constant rate of change and one doesn't.
• One has ordered pairs and one doesn't.
• Each x value has exactly one y value.

What determines how "steep", how vertical or how horizontal, a line on a graph is?

• The rate of change
• The y- intercept
• The x- intercept
• The x values

If we are graphing the distance from home of a person who leaves the house and walks to school,  what happens to the line as the person gets closer to school?

• It decreases.
• It remains constant.
• It increases.
• It is vertical.

You are creating a graph using a motion detector. The line is increasing. You want the line to continue increasing but to become more horizontal. To achieve this you must

• Change the direction that you are walking.
• Walk faster.
• Walk slower.
• Stand in the same position for 3 seconds, then continue on.

You and a friend are going to run a race against each other. Your friend is much faster so he gives you a 3 second head start. You graph both lines to represent your speed as well as your friends speed as you run the race. How do the lines differ?

• Your line is more vertical.
• Your friends line is more vertical. 
• Your friends line is horizontal at first, then the two lines match.
• Your friends line never "catches up" to your line.