Slope Equations of Parallel and Perpendicular Lines

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

• Parallel

• Perpendicular

• Neither

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

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

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

What is the slope of a line perpendicular to the x axis?​ (a)  

• undefined

• zero

• 1

• x

• y

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

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

• -2

• 1/2

• -1/2

• 2

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

• 1/2
  

• -1/2

• 2

• -2

What is the slope of a line parallel to the line whose equation is -6x + y = -7?

• 6

• -6

• 1/6

• -1/6