Question 448150: write an equation with the following coordinates (-8,-7)(0,-7)(8-,7). Please show all your work.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! write an equation with the following coordinates (-8,-7)(0,-7)(8,7). Please show all your work.
Quadratic Form::: ax^2 + bx + c = y
(-8,-7) gives:: 64a - 8b + c = -7
(0, -7) gives:: 0 + 0 + c = -7
(8, 7) gives:: 64a + 8b + c = 7
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Using a matrix function on a TI-84 you get:
a = 7/64
b = 56/64
c = -7
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y = (7/64)x^2 + (56/64)x -7
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Cheers,
Stan H.
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