Solving Systems of Equations by Substitution

What is the solution to the system of equations y = 4x - 9 and y = x - 3?

• (0, -3)

• (1, 2)

• (3, 0)

• (2, -1)

In the system of equations 4x + 2y = 10 and x - y = 13, what is the value of y?

• -7

• 6

• 7

• -6

For the equation 5x + 4(-5) = -20, what is the value of x?

• -5

• 0

• 5

• 10

What is the solution to the system where x = -7y and 2(-7y) - 8y = 22?

• (-1, 7)

• (-7, 1)

• (7, -1)

• (1, 7)

In the system y = -x, what is the solution if x = -2?

• (-2, -2)

• (2, -2)

• (2, 2)

• (-2, 2)

What is the value of x in the system where x = 2y - 21 and y = 8?

• 8

• 5

• -8

• -5

For the equation 3x - 5(-7) = 17, what is the value of x?

• 7

• -7

• 6

• -6

In the system where x = y, what is the solution if y = -8?

• (8, -8)

• (-8, 8)

• (-8, -8)

• (8, 8)

What is the solution to the system where y = 4x - 20 and x = 3?

• (-3, -8)

• (-3, 8)

• (3, -8)

• (3, 8)

Which method can be used as an alternative to solve the system in problem 14?

• Dividing by 2

• Multiplying by 3

• Adding 5

• Subtracting 4