What is the #y#-coordinate of the vertex of the parabolic graph of #fx)=ax^2 + bx + c#?

1 Answer
Dec 2, 2017

See explanation below.

Explanation:

The #y#-coordinate can be be found only after the #x#-coordinate is found.

To find the #x#-coordinate, use the following formula:

#-\frac{b}{2a}#

Then, plug that value into the equation #ax^2+bx+c# for #x#, and that will give you the #y#-coordinate.