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mscrosscountry

  • 2 years ago

Which of the following is the vertex of the quadratic equation y = 6x2 + 24x + 16?

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  1. petewe
    • 2 years ago
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    Use the formula: -b/2a to find your axis of symmetry, sub that in, to find the y coordinate.

  2. Open2study
    • 2 years ago
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    was this originally a multiple choice question? Your question implies it is, but there are no follow up options.

  3. mscrosscountry
    • 2 years ago
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    i got (2, 8)

  4. apoorvk
    • 2 years ago
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    vertex of a quadratic equation' parabola = (-b/2a , -D/4a) where, D = Discriminant. \[D= \sqrt{b^2 - 4ac}\]

  5. mscrosscountry
    • 2 years ago
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    (–2, –8) (–2, 8) (2, –8) (2, 8)

  6. mscrosscountry
    • 2 years ago
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    these are the options

  7. petewe
    • 2 years ago
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    Try again

  8. apoorvk
    • 2 years ago
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    Err.. a wee bit of a mistake. should be (-2, -8)

  9. mscrosscountry
    • 2 years ago
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    can you work it out please? I don't understand

  10. petewe
    • 2 years ago
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    |dw:1334421718973:dw|

  11. petewe
    • 2 years ago
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    That gives you your axis of symmetry

  12. petewe
    • 2 years ago
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    |dw:1334421758630:dw|

  13. DHASHNI
    • 2 years ago
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    (–2, –8) is the ans y=6(x^2+4x+4)-8 (y+8)=6(x+3)^2 therefore –2, –8) is the ans

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