System of Equations by Substitution

Solve the system of equations by substitution

y=2x

x + y = 9

• (6, 3)

• (3, 6)

• (-3, -6)

• no solution

Solve the system by substitution

3x + 2y = 16

7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

What is the solution to this equation?

• one solution

• no solution

• infinite solutions

• none of these

Solve the system of equations by the substitution method

• (-6, 30)

• (-2, 10)

• (44, 39)

• No solution

• Infinite solutions

Solve each system by substitution.

• A

• B

• C

• D

Solve each system by substitution.

• A

• B

• C

• D

Solve each system by substitution.

• A

• B

• C

• D

Solve each system by substitution.

• A

• B

• C

• D

Which choice shows substitution correctly?

• 3x + (2x + 3) = 20

• 3x + 2y(2x + 3) = 20

• 3x + 2 (2x + 3) = 20

• y + 2x + 3 = 20

The equations of two lines are:
 2x-y=4 and y=-2x+8.
What is the value of x in the solution for this system?

• x=8

• x=3

• x=11

• x=5