Math Function Machine

Find y if x=2?
y = x² − 1

• 3
• 1
• 4
• 2

f(x) means the same as y. If the input is 8 what is the output?

• -8

• 8

f(x) is the same as y. If the input is -3 what is the output?

• -2

• 24

• 10

• 2

f(x) is the same as y. If the input is -2, what is the output?

• 1

• 5

• -1

• 6

if the input is 5, what is the output? Hint: f(x) means the same thing as y.

• 25

• 125

• 5

• 10

if x= -2, what is the output?

• f(x)=9

• f(x)=-15

• f(x)=-9

• f(x)=21

What number goes in the question mark? Look at the in and out chart. 

• 11
• 5
• 4
• 3

What number should replace the question mark?

• 6
• 7
• 5
• 8

What is the rule for the in and out table shown?

• add 5 
• subtract 5
• add 6 
• subtract 6 

What number should replace the question mark?

• 8 
• 10 
• 9 
• 1