\
The line equation in slope-intercept form is , where m is the slope
and b is the y-intercept.
\First find the slope of the line.
\ (Substitute 0 for x1, 2 for y1, 1 for x2 and – 2 for y2)
(Simplify)
(Subtract:
)
(Divide:
)
Next find the y-intercept.
\The line crosses the y-axis at (0, 2).
\So, y-intercept is 2.
Replace m with –4 and b with 2 in the equation.
The slope-intercept form of the line equation is .