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Nonlinear Functions

SAT Math· difficulty 2/5

The graph of y=f(x)y = f(x) is reflected over the yy-axis. Which equation represents the new graph?

  • A

    y=−f(−x)y = -f(-x)

  • B

    y=f(−x)y = f(-x)

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  • C

    y=f−1(x)y = f^{-1}(x)

  • D

    y=−f(x)y = -f(x)

Explanation

Reflection over the yy-axis negates the input: y=f(−x)y = f(-x).

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