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21 March, 06:39

What is the vertex of the graph - 2x^2+8x-3

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Answers (2)
  1. 21 March, 07:27
    0
    (2,5)

    Step-by-step explanation:

    The vertex of a quadratic equation is equal to - b/2a:

    -8/2 (-2)

    -8/-4

    2

    Plug x=2 into the function:

    y=-2 (2) ^2+8 (2) - 3

    y=-2 (4) + 16-3

    y=-8+13

    y=5

    So the vertex of the graph is (2,5)
  2. 21 March, 10:31
    0
    (2,5) is the answer I took the test today
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