Equations for Parallel and Perpendicular Lines

Write an equation of a line parallel to y = x + 3 through (5, 3) 

• y = x + 2

• y = -2x + 1

• y = 2x + 1

• y = x - 2

Write an equation for a line perpendicular to
y = -5x + 3 through (-5, -4)

• y = -3x + 1/5

• y = -3x - 1/5

• y = 1/5x - 3

• y = -1/5x - 3

Slopes of parallel lines are...

• opposite reciprocals

• the same

• opposites

• always 7

Slopes of perpendicular lines are...

• opposite reciprocals

• the same

• opposite

• always 7

• the same line

• perpendicular

• neither

• parallel

• Parallel

• Perpendicular

• Neither

• -2

• -1/2

• 1/2

• 2

y = 3x +2
y = 3x - 3
These lines are...

• Parallel

• Perpendicular

• Neither

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither