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Nonlinear Functions

SAT Math· difficulty 3/5

Find the vertex of y=−2x2+8x−3y = -2x^2 + 8x - 3.

  • A

    (2,5)(2, 5)

    check_circle
  • B

    (2,−5)(2, -5)

  • C

    (4,5)(4, 5)

  • D

    (−2,5)(-2, 5)

Explanation

x=−8/(−4)=2x = -8/(-4) = 2. y(2)=−8+16−3=5y(2) = -8 + 16 - 3 = 5. Vertex (2,5)(2, 5).

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