Unit 5 - Lesson 1
How do you write the equation of a line perpendicular to a given line passing through a given point?
Step 1: Find the SLOPE of the given line.
Step 2: Find the OPPOSITE RECIPROCAL
slope, this will be the slope (m) for Step 3 & 4.
Step 3: Substitute the slope of the given line,
and the x- & y- values of the given point
into the equation y = mx + b, and
solve for b.
Step 4: Substitute m & b into y = mx + b.