Constant vs Non Constant Rate of Change

Tim bought a new phone.  He paid $125 on the day of purchase, then $50 per month until it was paid off. What is the rate of change in this situation?

• 50

• 125

What has the GREATER rate of change.

• y = 7x + 10

• Someone who starts with $6 and gets $8 each day.

• y = 5x + 20

• Someone who starts with $8 and gets $6 each day.

Is the equation linear or nonlinear?

• Linear

• Nonlinear

Is the table linear or nonlinear?

• Linear

• Nonlinear

Which answer choice is true?

• The table represents a linear function because there is a pattern for the x-coordinates and y-coordinates.

• The table represents a linear function because the ratio of the change in the y value and the change in the x value is constant.

• The table represents a nonlinear function because the ratio of the change in the y value and the change in the x value is not constant.

• The table does not represent a function because there is more than one output for at least one input.

Which table(s) represent nonlinear functions?

• Table 1, only.

• Table 2, only

• Tables 1 and 3, only

• Tables 2 and 3, only

Which statement is true?

• Both Graphs have multiple y intercepts

• Both graphs are not functions

• The first graph is linear because it has a constant rate of change.

• The second graph is nonlinear but has a constant rate of change.

Find the rate of change

• 1

• 2

• 11

• Not a constant slope/Non-Linear

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

Find the rate of change

• 1

• 2

• 11

• Not a constant slope/Non-Linear