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Linear Functions

SAT Math· difficulty 3/5

Function hh is linear with h(0)=1h(0) = 1 and h(5)=−9h(5) = -9. The average rate of change is:

  • A

    85\dfrac{8}{5}

  • B

    −85-\dfrac{8}{5}

  • C

    22

  • D

    −2-2

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Explanation

(−9−1)/5=−2(-9 - 1)/5 = -2.

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