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Nonlinear Functions

SAT Math· difficulty 4/5

Which point is on the graph of y=4⋅(1/2)xy = 4 \cdot (1/2)^x?

  • A

    (0,1/2)(0, 1/2)

  • B

    (2,2)(2, 2)

  • C

    (−2,8)(-2, 8)

  • D

    (2,1)(2, 1)

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Explanation

At x=2x = 2: y=4⋅(1/2)2=4/4=1y = 4 \cdot (1/2)^2 = 4/4 = 1.

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