The equation is .

First find the y-intercept.

The y-intercept is the value of y, when x = 0.

                                 (Substitute x = 0 in original equation)

                                             (Zeroproduct property: )

The y-intercept is 15 , so the graph intersects the y-axis at (0, 15).

Next find the x-intercept.

The x-intercept is the value of x, when y = 0.

                                   (Substitute y = 0 in original equation)

                                          (Apply additive identity property: 3x + 0 = 3x)

                                    (Divide each side by 3)

                                         (Cancel common terms)

                                              (Divide: )

The x-intercept is 5 , so the graph intersects the x-axis at ( 5 , 0).

Graph Using Intercepts:

Use these ordered pairs to graph the equation.

1.     Draw a coordinate plane.

2.     Plot the points.

3.     Draw a line through these points.

Graph for the equation  is