function notation

What is x if
f(x) = -2?

• 4

• 0

• 3

• 8

What is f(8)? 

• 8

• 0

• 3

• -2

What is f(1)?

• 1

• 5

• 0

• 4

• 1

• -1

• 19

• -19

• -12

• -43

• 29

• -29

• 16

• 48

• -28

• 4

f(x) is the same thing as ______.

• y

• x

• input

• an equation

f(x) = x² + 7
x(2) = ______

• 10

• 11

• 13

• 12

g(x) = 3x + 1
g(2) = _______

• 6

• 7

• 8

• 9

If f(x) = 6x - 9, find f(4).

• (4, 1)

• (4, 33)

• (4, 15)

• (4, -7)