Question

The equation of line CD is (y-3) = -2 (x -4). What is the slope of a line perpendicular to line CD

Answer 1

This linear equation is written in point-slope form, meaning that the constant outside of the (x - 4) is the slope: -2.

Perpendicular lines' slopes are oppositely negated, so -2 turns into positive 1/2.

So, the slope is 1/2.