Equations of Parallel & Perpendicular Lines

Slopes of parallel lines are...

• opposite reciprocals

• equal

• opposites

• always 7

Slopes of perpendicular lines are...

• opposite reciprocals

• the same

• opposite

• always 7

• the same line

• perpendicular

• neither

• parallel

• Parallel

• Perpendicular

• Neither

Select the line that is perpendicular to

y = 5x - 10

• y = 5x - 3

• y = 1/5x - 3

• y = -1/5x + 4

• y = -5x + 4

Are the two linear equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

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

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

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

Which equation is parallel to the x-axis and goes through the point (2, 5)?

• x = 2

• x = 5

• y = 2

• y = 5