Functions Values and Desmos

Multiple Choice

If f(x)= 5x + 78, what is f(-7)?

• 66

• 113

• 43

• -35

Here's what it would have looked like on your desmos calculator.

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Multiple Choice

If $$f\left(x\right)=x^2-49$$ , what is f(6)?

• -43

• -37

• 36

• -13

Here's what it would have looked like on your desmos calculator.

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Multiple Choice

If $$f\left(x\right)=-4x^2+3x-30$$ , what is f(-2)?

• -40

• 24

• 16

• -52

Here's what it would have looked like on your desmos calculator.

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Multiple Choice

If $$f\left(x\right)=-9x+56$$ , what is f(-12)?

• 35

• 164

• -52

• -21