Simultaneous Equations by Substitution

Solve the system of equations using substitution:

-4x + 4y = 8

y = -2x - 10

• (-4, -2)

• (12, -34)

• (4, -18)

• (-2, -6)

Solve the system by substitution:

y = x + 5
4x + y = 20

• (3,8)
• (8,3)
• (0,2)
• (2,0)

Using the simultaneous equations 7x+7y=-28 and -4 - 0.875x = 1y, find the solution, giving your answer as a coordinate pair

• (1, -4)
• (0, -4)
• (0, -3)
• (-4, 0)

• (3, 4)

• (4, 3)

• (4, 4)

• (3, 3)

• (1, 2)

• (1, 1)

• (2, 1)

• (2, 2)

Solve:
x = -3y - 17
2x + 3y = -7

• (1, -20)
• (3, 0)
• (-5, -2)
• (10 , -9)

y = -6
-3x - 6y = 24

• (6, 6)
• (6, -6)
• (4, -6)
• (-6, 4)

Solve for (x,y)

3y - 8 = x

-4x - 3y = 2

• (2,2)

• (-2, -2)

• (-2,2)

• (2,1)