Function Combinations

Is this a function? Explain.

• Yes; each x-value has one corresponding y-value.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; there is a line connecting the dots.

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

Evaluate f(x)=-2x²+ 1 for f(-3)

• 19

• 37

• -17

• -11

Evaluate f(33)

• 33
• 11
• 10
• 8

f(x) = x + 5 and g(x) = x² - 2x + 3
Find f(x) * g(x)

• x³ + 3x² - 7x + 15
• x³ - 2x² + 15
• x³ + 3x² - 10x + 15
• x³ - 3x + 15

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

f(x)= x² - 1

g(x)= x - 1

Find (f(x)/g(x))

Then simplify using x = 10

• 9

• 11

• 90

• 110

Find the product of the given functions.

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• A

• B

• C

• D

Find the quotient of the given functions.

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• A

• B

• C

• D