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anonymous

  • 5 years ago

givrn: y=2x^2 -4x+3 find the vertex

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  1. anonymous
    • 5 years ago
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    use \[-\frac{b}{2a}\]

  2. anonymous
    • 5 years ago
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    in your example a = 2, b = -4 and \[-\frac{-4}{2\times 2}=1\]

  3. anonymous
    • 5 years ago
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    first coordinate of the vertex is 1, second is what y ou get when you replace x by 1, 2-4+3=1 so vertex is (1,1)

  4. anonymous
    • 5 years ago
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    what would be the intercept

  5. anonymous
    • 5 years ago
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    there is no x intercept since this is a parabola that faces up and the vertex is above the x - axis

  6. anonymous
    • 5 years ago
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    y intercept

  7. anonymous
    • 5 years ago
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    the y-intercept is what you get when you replace x by 0, which is the constant . in this case it is 3, so y-intercept is (0,3)

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