Functions Review

Which statement describes a function?

• For every input, there is exactly one output.

• For every input, there are no more than two outputs.

• For every output, there is exactly one input.

• For every output, there are no more than two inputs.

Which function is linear?

• A

• B

• C

• D

Susie plants flowers in her garden and records the heights, y, in centimeters, each day, x. The table shows Susie's data.

Which equations represents the relationship between x and y?

• Function Q's y-intercept is below Function T's y-intercept.

• Function Q's y-intercept is negative, and Function T's y-intercept is positive.

• Function Q's y-intercept is positive, and Function T's y-intercept is negative.

• Function Q's y-intercept and Function T's y-intercept are the same.

Is this table a function or not a function? 

• Function
• Not a Function

Is this graph a function or not a function? 

• Function
• Not a Function 

Which equations represent a nonlinear function? Select ALL that apply.

Camille charges $25 a night to babysit plus an additional $5 per child. The table represents what Dante charges to babysit.

How much more does Dante charge per child to babysit than Camille?

• $17.50

• $7.50

• $2.50

• $1.25

Which statement about the graph of a linear function is true?

• The graph intersects the x-axis in two unique places.

• The graph intersects the y-axis in two unique places.

• The graph is a curved line.

• The graph is a straight line.

The graph of a linear function passes through the points (-3, -6) and (-5, 2). What is the rate of change of the function?