5.5.2
Algebra 1
Goal 2.2.A.9: Write equations of parallel and perpendicular lines.
Everyone needs a piece of graph paper!
Remember:
• Parallel Lines have the same slope
• Perpendicular Lines have opposite reciprocal slopes
Then graph both equations to make sure they are parallel.
m=___, b=___
Then graph both equations to make
sure they are perpendicular.
m=___, b=___
Try this:
What if they didn't give us the given
equation in slope-intercept form?
Write an equation of the line that passes through the given
point and is parallel to the given line.
(-10, 0), -y + 3x = 16
Write an equation of the line that passes through the given
point and is perpendicular to the given line.
(-5, 2), y + 3 = 2x
HOMEWORK: pg. 322; 2­10 even, 16, 18­26e
EC: 28, 32 SHOW ALL WORK AND WRITE ALL FINAL EQUATIONS IN SLOPE­
INTERCEPT FORM!!!