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bridgetolivares

  • 3 years ago

Which of the following is the vertex of the quadratic equation y = 6x2 – 24x + 32? (–2, –8) (2, –8) (2, 8) (–2, 8)

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  1. hiimchristina
    • 3 years ago
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    a=6 b=-24 c=32. to find vertex, you do -b/2a. so (-)(-24)/2(6) so, it would be 24/12, which is 6. then you have to plug that in to find..i think? lol i'm wrong, sorry

  2. zepp
    • 3 years ago
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    Yes, to find the x value of the vetex, use -b/2a, but @hiimchristina it's would be 24/12 = 2, not 6 Then plug two in you equation and solve for y, and you'll find the corresponding value of y for that x (2).

  3. partyrainbow276
    • 3 years ago
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    hold up.....

  4. bridgetolivares
    • 3 years ago
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    thank you @zepp

  5. hiimchristina
    • 3 years ago
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    omfg, i made a stupid mistake. lol i know it's 2. i was looking at it too quick.

  6. partyrainbow276
    • 3 years ago
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    it's (2,8) look at this.....

  7. partyrainbow276
    • 3 years ago
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    http://www.wolframalpha.com/input/?i=+vertex+of+y+%3D+6x2+ –+24x+%2B+32

  8. hiimchristina
    • 3 years ago
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    so, it would be 2. then you plug it in 6{2}^2 - 24(2) + 32

  9. partyrainbow276
    • 3 years ago
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    yea

  10. bridgetolivares
    • 3 years ago
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    could you guys help me with this one http://openstudy.com/study?login#/updates/4faaee15e4b059b524f6bdfe

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