Parallel & Perpendicular Lines

What is true about the slope of parallel lines?

• The slope of two parallel lines are always equal

• The slope of two parallel lines are sometimes equal

• The slope of two parallel lines are never equal

• The slope of two parallel lines are always opposite reciprocals

What is true about the slope of perpendicular lines?

• The slope of two perpendicular lines are always equal

• The slope of two perpendicular lines are sometimes equal

• The slope of two perpendicular lines are never equal

• The slope of two perpendicular lines are always opposite reciprocals

Which linear equation would be parallel to the line pictured?

• $y=\frac{7}{2}x+4$

• $y=-\frac{7}{2}x-10$

• $y=3x+1$

• $y\ =-\frac{2}{7}x-3$

Which linear equation would be perpendicular to the line pictured?

• 
  

  $y\ =\ x+5$
  

• $y=-x-1$

• $y=-\frac{3}{4}x-1$

• $y\ =2x+7$

Write an equation for a line that has a slope = 3 and passes through the point (-4, -7).

• 
  

  $y=3x+5$
  

• $y=3x-19$

• $y=3x+19$

• $y=3x-5$

Write an equation for a line that passes through points (-2, 7) and (6, -5).

• 
  

  $y=-\frac{3}{2}x+4$
  

• $y=\frac{1}{4}x-1$

• $y=-\frac{3}{2}x-10$

• $y=\frac{2}{3}x+2$

Which line is parallel to

 $5x-2y=18$  ?

•  $y=\frac{2}{5}x+1$  

•  $y=-\frac{2}{5}x-7$  

•  $y=\frac{5}{2}x-4$  

•  $y=-\frac{5}{2}x+2$  

Which line is perpendicular to the line

 $y=-3x+2$  ?

•  $3x+y=4$  

•  $x+3y=24$  

•  $3x-y=5$  

•  $x-3y=3$  

Write an equation that is parallel to

 $y=-4x+5$  and passes through the point (-2, -1).

• y = -4x - 9

• y = -4x - 7

• y = -4x + 7

• y = -4x - 3

Write an equation that is perpendicular to

 $3x-5y=5$  and passes through the point (9, -14).

•  $y=-\frac{5}{3}x+1$  

•  $y=-\frac{5}{3}x$  

•  $y=-\frac{5}{3}x-1$  

•  $y=\frac{5}{3}x-5$