Parallel and Perpendicular Lines

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

• Parallel

• Perpendicular

• Neither

• The same line

What is the slope of a line perpendicular to the line whose equation is: -2x + y = - 7?

• -2

• 1/2

• -1/2

• 2

Slopes of parallel lines are...

• opposite reciprocals.

• opposites.

• the same.

• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• the same.

• always 7.

• line s

• line t

• line m

• line l

• line l

• line m

• line s

• line t

• line l

• line m

• line s

• line t

• line s

• line t

• line m

• line l

• line s

• line t

• line m

• line l

y = -2/3x + 2
y = 3/2x + 9
These lines are...

• Parallel

• Perpendicular

• Neither