Parallel and Perpendicular Equations of a Line

Slopes of perpendicular lines are...

• opposite reciprocals

• the same

• opposite

• always 7

Tags

CCSS.8.EE.B.6

• the same line

• perpendicular

• neither

• parallel

Tags

CCSS.8.EE.C.8B

• Parallel

• Perpendicular

• Neither

Tags

CCSS.8.EE.B.6

What is the slope of a line perpendicular to a line with slope ^-6/₅ ?

• ^-6/₅

• ^-5/6

• ⁵/₆

• ^-4/₃

Tags

CCSS.8.EE.B.6

Write the equation of the line that is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

Mathematical Equivalence

ON

Mabel graphed the equations y = (1/3)x + 2 and y = 3x + 2.

These lines are​ ​ (a)   because their slopes are ​ (b)   .

• perpendicular

• intersecting at an angle that is not 90 degrees

• parallel

• reciprocals, but are not opposites

• equal

• opposites, but not reciprocals

Tags

CCSS.8.EE.B.6

In a coordinate plane two nonvertical lines are ​ (a)   if the product of their slopes are -1

• perpendicular

• parallel

• horizontal

• vertical

• acutely intersecting

Tags

CCSS.8.EE.B.6

Mathematical Equivalence

ON

Sadie graphed the equations y = 4 and y = -7. These lines are ​ (a)   and their slopes equal ​ (b)   .

• parallel

• perpendicular

• opposites

• zero

• undefined

Tags

CCSS.8.EE.B.5

Find a line parallel to 2x - 3y = 12 and goes through (12, 4)

y = ​ (a)   x ​ ​ (b)   (c)  

• 2/3

• -

• 4

• -2/3

• 12

• +

• 3/2

• 14

• -3/2

• 22