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burnt_umber
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$1.00 find equation of parabola using three points (no vertex)

  • From Mathematics: Algebra
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  • Due on Nov. 18, 2008
  • Asked on Nov 15, 2008 at 2:45:41PM
Q:
Find the equation of the parabola (with a vertical axis) that passes through the points: (2,9); (-2,1); (-3,4).

Explain process. Explain use of TI-89 graphing calculator if applies.

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Posted by:
sudipta
sudipta
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$4.00 Full detailed A+ answer

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  • Posted on Nov 15, 2008 at 3:36:54PM
A:
Preview: ... .5 in Eq(1) to get:<br>4a + 2(-2.5) + c = -9<br>=> 4a + c = -9 + 5<br>=> 4a + c = -4 ... Eq(4)<br><br>Substitute b = -2.5 in Eq(3) to get:<br>9a - 3(-2.5) + c = 4<br>=> 9a + c = 4 - 7.5<br>=> 9a + c = -3.5 ... Eq(5)<br><br>Eq(5) - E ...

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