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Nonlinear Functions

SAT Math· difficulty 4/5

The graph of y=exy = e^x is reflected over the yy-axis. Which equation results?

  • A

    y=−exy = -e^x

  • B

    y=e−xy = e^{-x}

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  • C

    y=−e−xy = -e^{-x}

  • D

    y=ln⁡xy = \ln x

Explanation

Reflection over yy-axis: replace xx with −x-x: y=e−xy = e^{-x}.

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