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Nonlinear Functions

SAT Math· difficulty 3/5

The graph of y=f(x)y = f(x) is horizontally compressed by a factor of 2. Which equation represents the new graph?

  • A

    y=f(2x)y = f(2x)

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  • B

    y=f(x/2)y = f(x/2)

  • C

    y=2f(x)y = 2f(x)

  • D

    y=f(x)/2y = f(x) / 2

Explanation

Horizontal compression by factor aa: replace xx with axax, so y=f(2x)y = f(2x).

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