Unit 7 Quiz #1 Review Functions

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

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Does this relation represent a function?

{(1,5), (1,6), (1,7), (1,8), (1,9)}

• Yes

• No

Which relation is a function?

• {(9, 5) (10, 5) (9, -5) (10, -5)}

• {(3, 4) (4, -3) (7, 4) (3, 8)}

• {(6, -5) (7, -3) (8, -1) (9, 1)}

• {(2, -2) (5, 9) (5, -7) (1, 4)}

Is the following table a function? Why or why not.

• Yes, the x-value is paired with exactly 1 y-value

• No, the x-value is paired with 2 different y-values

Does this table represent a function?

• Yes 
• No

Tags

CCSS.8.F.A.1

Is the following table a function?

• Yes

• No

Is the following table a function?

• Yes

• No

Is the following table a function?

• Yes

• No

Is the following table a function?

• Yes

• No

Is the following table a function?

• Yes

• No