Functions Precalculus

Using the vertical line test. Is this a function?

• Yes

• No

Using the vertical line test. Is this a function?

• Yes

• No

When is this function increasing?

• −2.5 < x < 2.5

• 0 < x < 5

• 0 < x < 55

• −5 < x < 0

Find the Relative Maximum and Minimum. Round to nearest tenth.

• A

• B

• C

• D

f(x) = 3x² + 7x and g(x) = 2x² - x - 1, find (f - g)(x).

• x² + 8x + 1

• x² + 6x - 1

• 5x² + 8x - 1

• x² + 8x -1

• -20

• 20

• -24

• 24

• 8/5

• 
• 
• 

Find g(- 2).

• 12

• -2

• -24

• 18

Evaluate f(3)

• -4

• 0

• 3

• undefined

Evaluate f(-5)

• -5

• -3

• 0

• undefined