Key Feature of Functions

What is the minimum of the blue function?

• y = -2

• y = 1

• y = -4

• y = 0

What are the green dots called?

• y-intercepts

• maximum

• minimum

• roots/x-intercepts

• Function
• Not a Function

• Function
• Not a Function

Identify the y-intercept of the function.

• (-2, 5) 

The graph is a picture of both ​ (a)  

• relation

• function

• domain

• range

• x-intercept

• y-intercept

• rate of change

• minimum

• maximum

• extrema

Answer explanation

Extrema are both the highest (maximum) point and the lowest (minimum) points.

What is the definition of function? (a)  

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Identify the y-intercept(s) of the function.

• None

Which of the following is NOT true about this function?

• The function is increasing from -3 to 0.

• The function has an x-intercept at (2, 0).

• The function has a y-intercept at (3, 0).

• The function is decreasing from 4 to infinity.

What is the minimum value of the function graphed below?

• 3

• 2

• -4

• -8