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donnie1999

  • one year ago

HELP WILL MEDAL Determine in which direction the parabola below opens. y = -3x^2 + 5x + 11

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  1. DanJS
    • one year ago
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    the negative in front of the squared term coefficient probably means downwards

  2. DanJS
    • one year ago
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    test a couple points about the axis of symmetry and see

  3. donnie1999
    • one year ago
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    so would the answer be left???

  4. DanJS
    • one year ago
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    http://awesomescreenshot.com/04051xwjad

  5. donnie1999
    • one year ago
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    @DanJS so would the answer be up???

  6. anonymous
    • one year ago
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    I'm pretty sure it opens downward

  7. anonymous
    • one year ago
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    Plot[11 + 5 x - 3 x^2, {x, -1.7, 3.3}]

  8. DanJS
    • one year ago
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    click on the link , it is downwards

  9. DanJS
    • one year ago
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    The slope of any tangent line to the parabola will be in the form - y=mx + b y=-3x + 5 Slope of -3, the thing is decreasing , opening down

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