Solving Systems Using Substitution Easy

What is the first step in solving a system by Substitution?

• Make sure both equations are in standard form.

• Make sure at least one equation is solved for one variable.

• Make sure both equations are in slope-intercept form.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which option shows the CORRECT substitution for this system?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which option shows the CORRECT substitution for this system?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which option shows the CORRECT substitution for this system?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system using substitution. ​

x=​ ​ (a)  

y=​ ​ (b)  

• -1

• 2

• -3

• -2

• 3

• 5

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve this system of equations. 
y = 2x + 1
y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Use substitution to find the x-coordinate of the solution.

• 2

• No solution

• -2

• -8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system of equations? (use Substitution)
y - 3x = -8
y = 4 - x

• (3,1)

• (-3,1)

• (1,3)

• (3,-1)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the system of equations using any method. Explain why you chose this method,

• (-0.5, 2)

• (4.5, 8)

• (-.75, -3)

• No Solution

Tags

CCSS.8.EE.C.8B

Solve the system.

The x - coordinate is ​ (a)  

The y - coordinate is ​ (b)  

• -3

• -2

• -11

• 0

• 2

• 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6