Equations of Parallel and Perpendicular Lines

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

• Parallel
• Perpendicular
• Neither

• Parallel

• Perendicular

• Neither

Which equation is perpendicular to:
 y = -6x +2

• y = 6x +1
• y = 1/6x +4
• y = -6x +3
• y = -1/6x +5

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

• y=1/6x +25/6

• y = 1/6x + 4

• y = -6x - 2

• y = -6x + 4

Write the equation of a line PERPENDICULAR to y = -1/3x + 5 and passes through the point (6,4)

Are the equations parallel, perpendicular, or neither?

• Parallel
• Perpendicular
• Neither

Write an equation of a line that passes through the point (7,10) and is perpendicular to the line y = (1/2)x - 9

• y = -2x - 24
• y = -2x + 12
• y = -2x  + 24
• y = (1/2)x - 12

If two lines are parallel their slopes are  ____________

• the same.
• negative reciprocals of each other.

If two lines are perpendicular to each other their slopes are ____________

• the same.

• negative reciprocals of each other.