The line equation in slope-intercept form is , where m is the slope and b is the y-intercept.

The x-intercept is . The graph crosses the x-axis at

The y-intercept is . The graph crosses the y-axis at

Find the slope using slope formula is .

                   (Replace   and  with , 0, 0 and )

                         (Apply Additive identity property: a + 0 = a)

                (Reciprocal of )

                              (Multiply: )

The slope of .

Next find the y-intercept value.

                            (Substitute   for m)

                      (Substitute  for x and y)

                              (Cancel common terms)

\

Apply subtraction property of equality: If a = b than a – c = b – c.

           (Subtract from each side)

\

Apply commutative property of addition: a + b = b + a.

                      (Apply Additive inverse property: –  = 0)

                              (Apply Additive identity property: b + 0 = b)

Substitute  for m and   for b in the Slope-intercept form equation.

The line equation in slope-intercept form is .