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

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Answer 1 · 2017-12-02T00:12:49

See explanation below.

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.

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