Describing Functions

Is the graph pictured a linear or nonlinear function?

• Linear

• Nonlinear

Is the table linear or nonlinear?

• Linear

• Nonlinear

Complete the table of values of

y = 4 - x.

• 5, 4

• 2, 1

• 0, -1

• 3, 2

If y = x - 6

What is the missing number?

• 12

• 10

• 14

• 13

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values

• Yes, because each input goes to one and only one output

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

This mapping diagram represents a function: (a)  

• No, because an input value goes to

• Yes, because each input goes to one

Find the missing OUTPUT value.

• 8

• -2

• 2

• -8

Find the missing OUTPUT value.

• -12

• 12

• 14

• 12x