The equation is .

To find the related function, rewrite the equation with 0 on the right side.

Subtract 2x from each side.

Add 7 to each side.

The related function .

To graph the function make a table

Use these ordered pairs to graph the related function .

1.      Draw a coordinate plane.

2.      Plot the points.

3.      Draw a line through these points.

Observe the graph, the graph intersects the x - axis at , hence the solution is .

Check:

To check the solution, substitute in original equation .

               (Multiply: )

                      (Subtract: )

                            (Add: )

The solution is true.

The solution of the equation is 8.