Tuesday

October 21, 2014

October 21, 2014

Posted by **Algebra student** on Tuesday, May 8, 2007 at 1:22pm.

1. y=(x-4)(x+2)

2. y=2x^2-4x+1

The midpoint of the x-intercepts of a parabola has the same x value as the vertex.

the x-intercepts are obviously x=4 and x=-2

so the x value of the vertex is......

sub that back into the equation to get the y value.

for the second one, just use the method of completing the square.

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