### Home > A2C > Chapter 7 > Lesson 7.3.1 > Problem 7-158

Complete the square to change each equation below to graphing form. Find the domain and range of each relation and determine if it is a function.

13 is not the correct number for a complete square.

Move it to the opposite side of the equation.Factor out the 2 because it will not make a

^{n}complete square.^{n}What number does the ? above need to be?

It needs to be 3.5 (or seven-twelfths).

3.5

^{2}needs to be added in the parenthesis.

This is actually 2(3.5^{2}) being added on the right side.

Add 2(3.5^{2}) to the left side as well.Factor.

To find the domain and range, think about what the graph looks like.

See the steps in part (a).

The graph in part (a) was a

parabola.

This in anparabola.

How does this change the graph and hence the domain and range?