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Linear Functions

SAT Math· difficulty 4/5

The graph of y=f(x)y = f(x) is reflected over the line y=xy = x. The new graph represents:

  • A

    y=−f(x)y = -f(x)

  • B

    y=f(−x)y = f(-x)

  • C

    y=−f−1(x)y = -f^{-1}(x)

  • D

    y=f−1(x)y = f^{-1}(x)

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Explanation

Reflecting over y=xy = x swaps xx and yy, producing the inverse function.

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