Question 149289: Write a quadratic equation based on the points (-1,0), (0.67,0), and (0,-2); and find its solution.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Write a quadratic equation based on the points (-1,0), (0.67,0), and (0,-2); and find its solution.
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The 1st two points are zeroes, so:
f(x) = a(x+1)(x-0.67)
f(x) = a[x^2 + 0.33x -0.67]
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The 3rd point is the y-intercept
f(0) = -0.67a = -2
a = 2.985..
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EQUATION:
f(x) = 2.985[x^2 + 0.33x - 0.67]
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Cheers,
Stan H.
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