### Home > AC > Chapter 8 > Lesson 8.2.3 > Problem 8-68

8-68.

The *x* coordinate of the vertex is halfway between 3 and 5.

*x* = 4

Substitute the vertex value of *x* back into the original equation to find *y*.

*y* = 2(4²) − 16(4) + 30

Solve for *y*.

*y* = −2

Coordinates = (4, −2)