GOAL 1 SLOPE OF PARALLEL LINES EXAMPLE 1 3.6 PARALLEL LINES IN THE COORDINATE PLANE y2 - y1y2 - y1 m = x2 - x1x2 - x1.
FeatureLesson Geometry Lesson Main 1. If AB = 3x + 11, BC = 2x + 19, and CD = 7x – 17, find x. 2. If m BAD = y and m ADC = 4y – 70, find y. 3. If m ABC.