## General Form of a Quadratic Function

In the following video he calculates the ‘k’ from vertex (h,k) by plugging in the value of h into the original quadratic function. You can also use k = c-(b^2)/(4a). Both yield the same ‘k’ value.

In the following video he calculates the ‘k’ from vertex (h,k) by plugging in the value of h into the original quadratic function. You can also use k = c-(b^2)/(4a). Both yield the same ‘k’ value.