Equations for Parallel Lines and Perpendicular Lines

Parallel lines have the same slope, but different y-intercepts (see page 242). Perpendicular lines are lines whose slopes are the negative reciprocals of each other, like -3 and 1/3. (See the challenge problem on page 246.)

Tonight's Homework: Page 246 ( 74 - 77 ) and Page 291 ( only 7 ).