Quiz # 8 Topic 10 and 11 AE

Problem # 1 on WS Day 7. Use Elimination of Addition to solve system of equation.

 $x+y=-4$  

 $x-y=2$  

• ( - 3, - 1)

• ( 1, 3 )

• ( - 1, - 3)

•  $x=-1$  

Problem # 4 on WS Day 7. Use Elimination of Addition to solve system of equation.

 $6x+5y=4$  

 $6x-7y=-20$  

•  $\left(-1,2\right)$  
  

•  $\left(2,-1\right)$  
  

•  $y=2$  
  

•  $x=-1$  

Solve using Elimination Method:

x - y = 11

2x + y = 19

• (10,-1)

• (-1,10)

• (3,-4)

• (6,7)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by elimination:

7x + y = -9

-3x - y = 5

• No solution

• (1,8)

• (-1,-3)

• (-1,-2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What would be the first step in finding the solution using elimination?

2x + 2y = -2

3x - 2y = 12

• you cannot solve this using eliminiation

• cross out the 2x and 3x

• cross out the 2y and -2y

• change to slope intercept form and graph

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the equation:
 $3c=12$  

• 36

• 4

• 15

• 9

Tags

CCSS.6.EE.B.7

Solve the equation:
 $x-12=2$  

• 24

• 10

• 20

• 14

Tags

CCSS.6.EE.B.7

Solve the equation:
 $9+x=18$  

• 10

• 8

• 9

• 2

Tags

CCSS.6.EE.B.7

(-5)(-3)

• -15

• 15

• -8

• -2

Tags

CCSS.HSA.APR.A.1

(-4)(4)

• 16

• -16

• 8

• -8

Tags

CCSS.HSA.APR.A.1