Lesson: Parallel and Perpendicular Lines

Lesson: Parallel and Perpendicular Lines

"The way to get started is to quit talking and begin doing."  ~ Einstein

Multiple Choice

Slopes of parallel lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

Multiple Choice

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

Multiple Choice

What slope is parallel to:

m = 4

• 4

• -1/4

• -4

• 1/4

Multiple Choice

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

Multiple Choice

Are these lines parallel, perpendicular, or just intersecting (but not perpendicular)?

 $y=6x+2$  $y=-6x-2$   

• Parallel

• Perpendicular

• Intersecting (but not perpendicular)

Multiple Choice

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

• y=1/6x +25/6

• y = 1/6x + 4

• y = -6x - 2

• y = -6x + 4

Multiple Choice

Write an equation that is parallel to

y = -2x + 4

and runs through the point (-3, 2 )

• y = - 2x - 4

• y = - 2x - 8

• y = - 2x + 4

Multiple Choice

Which of the following lines is PARALLEL to the graph of 5x + 2y = 8?

• 2x + 5y = 8

• 5x - 2y = 6

• -10x - 4y = 7

• -10x + 4y = 9

Multiple Choice

Write the equation of a line PERPENDICULAR to the line y = 3x + 2 that passes through the point (9, -2)

• y = -1/3x - 5

• y = 3x-29

• y = 1/3x -5

• y = -1/3x +1

Multiple Choice

Write the equation of a line PERPENDICULAR to y = -1/3x + 5 and passes through the point (6,4)

• $y=-\frac{1}{3}x+14$

• $y=3x+22$

• $y=-\frac{1}{3}x-10$

• $y=3x-14$