The line equation in slope-intercept form is ,

where m is the slope and b is the y-intercept.

Calculate the slope,

m = 

    =                                (Substitute )

    =                                       (Multiply:)

    =                                            (Add:)­­

    = .                                             (Divide:)­­

The line crosses the y-axis at (0, -2). So the y-intercept is -2.

Substitute m = 2 and b = -2 in slope-intercept form line equation.

                                       (Simplify)

The slope-intercept form of the line equation is .