Parallel and Perpendicular Lines

Parallel and Perpendicular Lines

find the slopes and compare

Poll

What did you eat for breakfast?

• cereal or oatmeal

• bacon and eggs

• waffles or pastry

• nothing

Poll

Parallel lines have the _______ slope.

• opposite

• reciprocal

• opposite & reciprocal

• same

Multiple Select

Perpendicular lines....(you will need to chose more than 1)

• have the same slope

• have opposite & reciprocal slopes

• change the sign and flip the slope

• form right angles (90⁰)

Multiple Choice

To find slope on a graph you need to....

• subract

• count rise over run

• call your mom

• count up then right

To find the slope of the lines

• count rise/run for each line

• compare the answers

Multiple Choice

compare the lines

• parallel

• perpendicular

• neither

• intersecting

Multiple Choice

compare the lines

• parallel

• perpendicular

• neither

• intersecting

Multiple Select

compare the lines

• parallel

• perpendicular

• neither

• intersecting

When given equations....

• get into y=mx+b

• compare the slopes

Multiple Choice

 $y=2x-4$  

 $y=-2x+4$  

• Parallel

• Perpendicular

• Neither

Multiple Choice

 $y=1/3x-2$  

 $y=3x+1$  

• Parallel

• Perpendicular

• Neither

Multiple Choice

 $y=-\frac{2}{3}x+7$  

 $2x+3y=4$  

• Parallel

• Perpendicular

• Neither

Multiple Choice

 $y=-\frac{1}{4}x+5$  

 $-4x+y=4$  

• Parallel

• Perpendicular

• Neither

Extra Credit

• go to Quizlet.com and make your own flashcards to practice

• Do 5 like...What is parallel to slope of 5? on the back m=5

• Do 5 like...What is perpendicular to slope of 2/5? on the back m=-5/2

• e-mail me the link to check