Nonlinear Functions

SAT Math· difficulty 4/5

What is the vertical asymptote of y=2x29y = \frac{2}{x^2 - 9}?

  • A

    x=3x = -3 only

  • B

    There is no vertical asymptote

  • C

    x=3x = 3 and x=3x = -3

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  • D

    x=3x = 3 only

Explanation

x29=0x^2 - 9 = 0 at x=±3x = \pm 3. Both are vertical asymptotes.

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