Homework Help: Math

Posted by Peter on Tuesday, September 4, 2012 at 1:58am.

Find two quadratic functions, one that opens upward and one that opens downward, whose graphs have the given x-intercepts.

(-3, 0), (-1/2, 0)

Math - MathMate, Tuesday, September 4, 2012 at 8:29am
Quadratic functions that have given x-intercepts x1 and x2 are given by the equation:
y=a(x-x1)(x-x2)

If a>0, the curve opens upwards, and if a<0, the curve opens downwards.
|a| can be any value ≠0 depending on the location of the vertex or any other point on the curve.

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