Systems of Equations by Substitution Isolated Variable

Solve the system by substitution

3x - y = 4

x + 2y = 6

• (-2, 2)

• (2, -2)

• (2, 2)

• (-2, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph

• Don't touch

• Intersect

• Exist

Tags

CCSS.8.EE.C.8B

What is the solution to this system?

• (-2, -2)

• (2, -2)

• (-2,2)

• (2, 2)

Tags

CCSS.8.EE.C.8B

Solve the system of linear equations by substitution.

5x + 6y = 50

x - 6y = -26

​ ​ ​ (a)   ​ (b)  

• x = 6

• x = -3

• y = 20/6

• y = -4

• x = 4

• y = 5

• x = -8

• y = 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system by substitution.  What is the solution?

• (1, -2)

• (-2, 1)

• (-4, 1)

• (2, 1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to this system? Solve by substitution.
y= 4x + 3
2x - 3y = 21

• (3,-9)

• (-3,-9)

• (-3,9)

• (0,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of linear equations by substitution.

x + y = 2

2x + 7y = 9

​ ​ ​ (a)   ​ (b)  

• x = 6

• x = -3

• y = 2

• y = 5/9

• x = 1

• y = 1

• x = -8

• y = 4

• x = -2

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the following system:

y = x + 8 and y = -x + 2

​ (a)   ​

​

• Infinite Solution

• (-2, 6)

• (3,5)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system of equations?

• (3, -2)

• (3, -3)

• (-3, 2)

• (-3, -2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

solve by substitution: y=3x+14
y=-4x

• y=3

• y=1

• y= - 2

• y=4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6