what does the a do in yaxh2kSolutionUsing a we can determine

what does the a do in y=a(x-h)^2+k

Solution

Using \"a\" we can determine whether parabola opens up or down.

If a>0, then the parabola opens up and it looks like regular \"U\".

If a<0, then the parabola open down and it looks like the upside down \"U\".

Also, using \"a\" we can determine whether the parabola has maximum or minimum value.

If a>0, then the parabola has minimum value and

if a<0, then the parabola has maximum value.