Substitution Elimination

At a local grocery store 5 oranges and 7 bananas cost $7.75, whereas 3 oranges and 9 bananas cost $8.25. Let x = cost of an orange Let y = cost of a banana Determine the cost of an orange and a banana.

• $0.75 for an orange and $0.50 for a banana

• $0.50 for an orange and $0.75 for a banana

• $0.25 for an orange and $1.00 for a banana

• $1.00 for an orange and $0.25 for a banana

Tags

CCSS.8.EE.C.8C

Which method would be best (quickest) for solving the system below:
3x - 4y = -2
y = 2x + 1

• Substitution

• Elimination

• Graphing

• None

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve for x and y.
2x − 3y = −1
 y = x − 1

• (-2,-3)

• (0,-1)

• (3,4)

• (4,3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations:
4x+8y=20
-4x+2y=-30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations:
3x + 2y = 16
14x + 2y = 38

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations. What is the value of the X? 
3x -  y  =  5
  x + y  =  3

• X = 2 

• X = 1 

• X =  -1 

•  X  =  -2

Tags

CCSS.HSA.REI.C.9

Solve the system of equations:
−8x − 10y = 20
 8x  +  6y =   4 

• (-5,-6)  

• (6, 5) 

• (−6, −5) 

• (5, −6) 

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system:
x + y = 19
y = 3x - 1

• (14, 5)

• (11, 8)

• (5, 14)

• (8, 11)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations:
y = 8x + 2
y = -x - 7

• (1, 10)

• (-1, -6)

• (2, 7)

• (9, 9)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve by substitution

2y+2x=6

y=3x-5

• (2,1)

• (1,2)

• (-1,5)

• (5,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6