Algebra-1st 9 Weeks Review

Which of the following equations has a graph PERPENDICULAR to the line y = 4x + 7 and has an y-intercept of -2?

Which two equations below are parallel?

• y = 2x + 1 and y = -1/2x + 1

• y = 2x + 3 and y = -2x + 3

• y = 2x - 1 and y = 1/2x - 1

• y = -x + 4 and y = -x + 2

Which two equations below are parallel?

• y = 2x + 1 and y = -1/2x + 1

• y = 2x + 3 and y = -2x + 3

• y = 2x - 1 and y = 1/2x - 1

• y = -x + 4 and y = -x + 2

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

What is the equation of the parallel line to $y=3x+1$  that contains the point  $\left(5,\ -2\right)$  ?

•  $y+2=3\left(x-5\right)$  

•  $y+2=-\frac{1}{3}\left(x-5\right)$  

•  $y-5=3\left(x+2\right)$  

•  $y-5=-\frac{1}{3}\left(x+2\right)$  

What is the equation of the perpendicular line to $y=\frac{1}{4}x-3$  that contains the point  $\left(-1,\ 2\right)$  ?

•  $y+1=-4\left(x-2\right)$  

•  $y+1=\frac{1}{4}\left(x-2\right)$  

•  $y-2=\frac{1}{4}\left(x+1\right)$  

•  $y-2=-4\left(x+1\right)$  

What is perpendicular to a vertical line?

• a horizontal line

• another vertical line

• any line

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

• $y=2x\ -3$

• $y=2x-5$

• $y=2x\ +\ 1$

• $y=-\frac{1}{2}x+\frac{5}{2}$

If a line has a slope of 2/3 a line that is perpendicular has a slope of what?

• -3/2

• 3/2

• 2/3

• -2/3

Tags

CCSS.8.EE.B.6

What is the equation of the line?

• y=3x
• y=3
• x=3
• y=-3