Perpendicular Lines

Which two equations below are perpendicular?

• y = -3x + 2 and y = -2x + 2

• y = 3x + 1 and y = 3x + 1

• y = -x + 1 and y = -x - 2

• y = 3x - 4 and y = -1/3x - 2

y < -4  y > -4 y ≤ -4  y ≥ -4 

• y < -4 

• y > -4

• y ≤ -4 

• y ≥ -4 

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

Identify a pair of pependicular lines.

• Lines AB and CD

• Lines AB and BD

• Lines AC and BD

• LInes BC and BD

Is line e perpendicular to line g?

• Yes, because line e is perpendicular to line f, and lines f and g are parallel.

• No, because while line e is perpendicular to line f, we don't have enough information to know lines f and g are parallel.

The two lines are _____________________.

• Parallel

• Perpendicular

• Neither

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

• Parallel

• Perpendicular

• Neither

Select ALL of the lines that are PERPENDICULAR to y = 3/4x + 9

• y = 3/4x - 3

• y = -3/4x + 9

• y = -4/3x + 8

• 3y = -4x + 5

• 4y = -3x + 7

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

• -2

• 1/2

• -1/2

• 2

Slopes of perpendicular lines are...

• opposite (sign) reciprocals.

• opposites.

• identical.

• always 7.