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.

Which option shows the CORRECT substitution for this system?

Which option shows the CORRECT substitution for this system?

Which option shows the CORRECT substitution for this system?

Solve the system using substitution. ​

x=​ ​ (a)  

y=​ ​ (b)  

• -1

• 2

• -3

• -2

• 3

• 5

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

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

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

• 2

• No solution

• -2

• -8

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)

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

• (-0.5, 2)

• (4.5, 8)

• (-.75, -3)

• No Solution

Solve the system.

The x - coordinate is ​ (a)  

The y - coordinate is ​ (b)  

• -3

• -2

• -11

• 0

• 2

• 4