Intermediate Algebra: Connecting Concepts through Application

y=$\frac{7}{3}$x+24
3x+7y=-21 7y=-3x-21 y=-$\frac{3}{7}$x-3 The given line has a slope of -$\frac{3}{7}$. Since the desired line is perpendicular, it must have a slope of $\frac{7}{3}$. y-y$_1$=m(x-x$_1$) y-3=$\frac{7}{3}$(x+9) y=$\frac{7}{3}$x+21+3 y=$\frac{7}{3}$x+24