Slope and Equation of a Line Parallel Perpendicular

Slopes of perpendicular lines are...

• opposite reciprocals

• the same

• opposite

• always 7

What is the slope of a line perpendicular to a line with slope ^-6/₅ ?

• ^-6/₅

• ^-5/6

• ⁵/₆

• ^-4/₃

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

What is the slope of a line parallel to the line whose equation is 4x + 3y = 9?

• -4/3

• 3/4

• 4/3

• -3/4

Find the slope of the line that is parallel to the graph of

y= 2/9 x - 4.

• 2/9

• 9/2

• -2/9

• -9/2

Find the slope of a line parallel to the line below y = ½x + 4

• 1/2
  

• -1/2

• 2

• -2

Find the slope of a line parallel to the line below y = ½x + 4

• 1/2
  

• -1/2

• 2

• -2

Find the slope of a line parallel to the line below.
y = 2x + 4

• 2

• -1/2

• 1/2

• -2

Choose the best answer to fill in the blanks.

Parallel lines always have the ​ (a)   slope.

Perpendicular lines have slopes that are ​ (b)   .

The product of perpendicular slopes always equals ​ (c)  

• same

• negative reciprocals

• -1

• reciprocals

• 1

• different