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Linear Functions

SAT Math· difficulty 3/5

Given f(x)=7−3xf(x) = 7 - 3x, find f(2)−f(5)f(2) - f(5).

  • A

    33

  • B

    −9-9

  • C

    −3-3

  • D

    99

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Explanation

f(2)=1f(2) = 1, f(5)=−8f(5) = -8. f(2)−f(5)=1−(−8)=9f(2) - f(5) = 1 - (-8) = 9.

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