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carlenstar281

  • 2 years ago

can you please help me :/

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  1. Notamathgenius
    • 2 years ago
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    Sure.

  2. carlenstar281
    • 2 years ago
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    i think i graphed the line right but i am not sure can you help please

  3. Notamathgenius
    • 2 years ago
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    @Muj_14 Help?

  4. carlenstar281
    • 2 years ago
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    yes

  5. campbell_st
    • 2 years ago
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    its a concave up parabola, symmetric about the y axis, cuts the y axis at - 4 and cuts the x axis at \[x = \pm \frac{2}{\sqrt{3}}\]

  6. carlenstar281
    • 2 years ago
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    yes i understand that but does the line point up or down I graphed it on my paper as being up but im not 100 % sure if that's correct

  7. campbell_st
    • 2 years ago
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    concave up... means |dw:1364412258382:dw|

  8. carlenstar281
    • 2 years ago
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    ohhh its up are you sure

  9. campbell_st
    • 2 years ago
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    |dw:1364412296139:dw|

  10. campbell_st
    • 2 years ago
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    The general from of a parabola is \[y = ax^2 + bx + c\] the value of a determines the concavity if a is negative the parabola is concave down is a is positive its concave up. in your question a = 3 which is positive, so concave up.

  11. carlenstar281
    • 2 years ago
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    thans so much :)

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