### Home > AC > Chapter 12 > Lesson 12.4.4 > Problem12-108

12-108.

Find the equation of the line perpendicular to $3x-y=4$ that goes through the point $\left(-12,4\right)$.

Solve the equation for $y$.

The slope of a perpendicular line is the opposite reciprocal of the original line.

Use the slope of the line and the point to solve for $b$.