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April 19, 2015

Homework Help: Quadractic Functions

Posted by Carmen on Sunday, October 14, 2007 at 11:14pm.

Please check my answers.

Find the x-intercepts (if any) for the graph of the quadratic function.

1.f(x) = (x + 2)2 - 4
I got (0,0) and (-4,0)

Find the y-intercept for the graph of the quadratic function.

5.y + 9 = (x + 3)2
I got (0,0)

Find the domain and range of the quadratic function whose graph is described.

7.The vertex is (1, -15) and the graph opens up.

I got domain: (-infinity, pos.infinity)
range: [-15, pos. infinity)

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