### Home > CCA2 > Chapter 7 > Lesson 7.1.5 > Problem7-82

7-82.

Change each of the following equations to graphing form and then, without graphing, identify the vertex and axis of symmetry for each.

Complete the square to get the equation in graphing form.

The axis of symmetry is the same as the $x-$coordinate of the vertex.

1. $y = 3x^2 −18x + 26$

vertex: $(3,−1)$
axis of symmetry: $x=3$

1. $y = 3x^2 − 4x − 11$