Parallel Lines and Perpendicular

y = 3x +2

y = 3x - 3

These lines are...

• Parallel

• Perpendicular

• Neither

y = 5/7x +2
y = 5/7x - 30
These lines are...

• Parallel

• Perpendicular

• Neither

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

Line a passes through (2, 4) and (4, 7)

Line b passes through (-5, 3) and (-3, 6)

Lines a and b are ?

• Parallel

• Perpendicular

• Neither

• line l

• line m

• line s

• line t

• line s

• line t

• line m

• line l

• line s

• line t

• line m

• line l

• line s

• line t

• line m

• line l

• line l

• line m

• line s

• line t

Slopes of parallel lines are...

• negative reciprocals.

• opposites.

• the same.

• always 7.