Parallel Perpendicular or Neither from a Point

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

• Parallel

• Perpendicular

• Neither

• The same line

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

• Parallel

• Perpendicular

• Neither

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

• -2

• 1/2

• -1/2

• 2

Tags

CCSS.8.EE.B.6

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

How can you tell if two lines are perpendicular from the equation

• If the slopes of the two lines are positive reciprocals

• If the slopes of the two lines are negative reciprocals

• If the slopes of the two are equal reciprocals

• If the two lines are not reciprocals

Tags

CCSS.8.EE.B.6

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 (-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 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

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• reciprocals

Tags

CCSS.8.EE.B.6

If a line is perpendicular to y = 2x - 7, then what would the slope of the new line be?

• -2

• 1/2

• -1/2

• 2

Tags

CCSS.8.EE.B.5