Find b and c so that http://math.mscd.edu/webwork2_files/...b9c1ea4471.png has vertex http://math.mscd.edu/webwork2_files/...37aaf10c91.png.

I really dont even know where to start

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- Sep 8th 2009, 10:55 AMdtownangelTrouble finding b and c. I know the vertex.
Find b and c so that http://math.mscd.edu/webwork2_files/...b9c1ea4471.png has vertex http://math.mscd.edu/webwork2_files/...37aaf10c91.png.

I really dont even know where to start - Sep 8th 2009, 11:17 AMAmer
the vertex of quadratics function given by

here we have a=-5 and b=b and c=c so

you want the vertex have the x-coordinate equal 5 so

we have now when x=5 y=-2

find c value

for more information see this link

Vertex of a quadratic curve - Sep 8th 2009, 11:22 AMred_dog
If then the vertex has the coordinates , where .

In this case .

Then you have to solve the system