Linear Functions

SAT Math· difficulty 3/5

For f(x)=32xf(x) = 3 - 2x, what is the average rate of change over [1,4][-1, 4]?

  • A

    1-1

  • B

    55

  • C

    22

  • D

    2-2

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Explanation

Linear function: rate equals slope =2= -2.

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