Identify If Equations Are Parallel or Perpendicular

Are these lines parallel, perpendicular, or neither?

y = (-1/2)x + 1

y = (1/2)x - 5

• Parallel

• Perpendicular

• Neither

Are the two linear equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• reciprocals

If a line is perpendicular to y = 2x - 7, then what would the slope of the new line be?

• -2

• 1/2

• -1/2

• 2

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

Are the two linear equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

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

• perpendicular

• parallel

• horizontal

• vertical

• acutely intersecting

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

• parallel

• perpendicular

• opposites

• zero

• undefined

Write an equation for a line that is perpendicular to

y = -5x + 3 and goes through (-5, -4) - Use the steps in 3.5 Geometry Journal

• y = -3x + 1/5

• y = -3x - 1/5

• y = 1/5x - 3

• y = -1/5x - 3

Are these lines perpendicular?
y = 4x + 2
y = (-1/4)x + 12

• YES

• NO