Review of Linear Systems of Equations and Inequalities

Select the best option below for solving this system of equations using elimination.

• Multiply the first equation by -1.

• Multiply the first equation by -2.

• Solve the second equation for y, then substitute that expression in for y in the other equation.

• No changes are necessary - this system is perfectly setup for elimination.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• substitution

• elimination

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which answer below shows the first step in solving the below system of equations using substitution?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

When graphing the below inequality, which type of line would you use?

• solid

• dotted

• shaded

• unshaded

Tags

CCSS.HSA.REI.D.12

When graphing the below inequality, which type of line would you use?

• solid

• dotted

• shaded

• unshaded

Tags

CCSS.HSA.REI.D.12

Alexandra finds that she can give 3 haircuts and 2 hair dyes in 315 minutes. Giving 2 haircuts and 4 hair dyes takes 450 minutes.  Which system of equations represents the situation?

• 3x + 2y = 315
  2x + 4y = 450

• 3x + 2y = 450
  2x + 4y = 315

• 2x + 2y = 315
  3x + 4y = 450

Tags

CCSS.HSA.CED.A.3

This system of linear equations is graphed as shown. 3x+y=2 x+3y=-18 What is the solution to this system of equations?

Tags

7 Systems of Equations

Solve the following equations for x and y:
-6x+6y=6
6x-3y=12

• (6, 5)

• (5, 6)

• (4, 4)

• (2, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system?

• (-1, 4)

• (3, 0)

• (4, 1)

• (0, -1)

Tags

CCSS.8.EE.C.8B

Write an inequality for the given graph.

• y < 3x + 1

• y > -3x - 1

• y ≤ -3x + 1

• y < -3x + 1

Tags

CCSS.HSA.REI.D.12