Equations of Parallel and Perpendicular Lines

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

Which is the equation of the line that is PARALLEL to the graph of y = 5x + 7 and has a y-intercept at (0, -2)?

• y = 5x - 2

• y = -2x + 7

• y = 5(x - 2)

• y = -1/5x - 2

Write an equation of a line that passes through the point (-9,2) and is perpendicular to the line y = 3x - 12

• y = (-1/3)x - 1

• y = (1/3)x - 2

• y = -3x + 12

• y = 3x - 1

Write the equation of a line PERPENDICULAR to y = -2x + 1 that passes through the point (2, 3).

If two lines are parallel their slopes are  ____________

• the same.

• negative reciprocals of each other.

Tags

CCSS.8.EE.B.6

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

• the same.

• negative reciprocals of each other.

Tags

CCSS.8.EE.B.6

Are these two lines parallel, perpendicular or neither?

y = -1/3x - 5

y = 1/3x + 2

• Parallel

• Perpendicular

• Neither

Tags

CCSS.8.EE.B.6

Are these lines parallel?
y = 12x + 4
y = 12x +14

• YES

• NO

Write an equation of a line that passes through the point (5,-1) and is parallel to the line y = (-3/5)x -3

• y = (-3/5)x + 2

• y = (-3/5)x -2

• y = (3/5)x + 2

• y = (5/3) + 2

Write an equation of a line that passes through the point (2,6) and is parallel to the line y = -3

• y = 12

• y = 6

• x = 12

• x = 6