## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

The three popular forms of a line's equation are: Standard Form: $Ax+By=C$ Slope-intercept Form: $y=mx+b$ Point-slope Form: $y-y_1=m(x-x_1)$ Notice that the equation $y=-\frac{1}{2}x-7$ is in slope-intercept form.