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

First find the y-intercept value.

                                 (Substitute  for m)

                          (Substitute 5, 1 for x, y)

                              (Multiply: )

Apply addition property of equality: If a = b than a + c = b + c.

    (Add to each side)

Apply commutative property of addition: .

                       (Apply Additive inverse property: )

                             (Apply Additive identity property: )

                                   (Add: )

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

The line equation in slope-intercept form is .