Systems of Equations Adding

Which method uses the following rule:
Isolate one of the variables 

• Graphing

• Elimination

• Substitution 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system?

• (1, -1)

• (-1, 1)

• (0, -2)

• (2, 0)

Tags

CCSS.8.EE.C.8B

Solve by elimination: Remember you are looking for Matching Opposites/You are always adding! PAY ATTENTION TO YOUR SIGNS. Hint: multiply the bottom one by "-1"

9x - 4y = 7

x - 4y = -17

• (-1,5)

• (-7,5)

• (7,5)

• (3,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Using elimination: WHAT IS THE "X" VALUE OF THE SYSTEM?

Remember you are looking for Matching Opposites/You are always adding! Hint: You will have to multiply on this one in order to eliminate.

4x - 6y = -6

-2x - 12y = -12

• x = 0

• y = 1

• x = -1

• y = 0

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Select the ALL the systems that have the same solution as the following system below.

-6x + 5y=1

6x + 4y=-10

• -12x + 10y = 2

  6x + 4y = -10

• -30x -30y = 30

  40x + 5y = 10

• 6x + 6y = -1

  6x + 4y = 10

• -6x + 5y = 1

  18x + 12y = -30

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Select ALL the systems that have the same solution as the following below. HINT: There are 3 correct answers

5x + y = 9

10x + 7y = −18

• 15x + 8y = -9

  20x + 14y = -36

• -10x - y = 18

  10x - 7y = -18

• 15x - 5y = -9

  10x - 7y = -18

• -35x - 7y = -63

  10x + 7y = -18

• -10x - 2y = -18

  10x + 7y = -18

Tags

CCSS.8.EE.C.8B

3x + 2y = 8

-x + y = -11

• (-5,6)

• (6,-11)

• (-6,-5)

• (6,-5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations.

y = -5x

x + 3y = 28

• (-6, 30)

• (-2, 10)

• (-2, 39)

• No solution

• Infinite solutions

Tags

CCSS.HSA.REI.C.7

Solve:

y = 8x+1

y = 6x+3

• (1, 9)

• (4, 14)

• (0, 1)

• (1, 4)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6