Solving a System Using Substitution Extra Practice

Solve by Substitution

y = 2x + 1

3x + y = -9

• (-2, -3)

• (-1.6, -2.2)

• (-1.6, -4.2)

• (-2, -5)

Solve by Substitution

y = 4x - 6

5x + 3y = -1

• (5/9, -34/9)

• (1, 10)

• (1, -2)

• (-2, 1)

Solve by Substitution

y = 2x

3x + y = 5

• Infinitely Many Solutions

• (-1, -2)

• (2, 1)

• (1, 2)

Solve by Substitution

x + y = 1

x = y + 6

• (2, -3)

• (3.5, -2.5)

• (3, -2)

• No Solution

Solve by Substitution

x - 3y = 3

2x - y = 11

• (0, -1)

• (6, 1)

• (36/7, 5/7)

• (1, 6)

Solve by Substitution

y = 2x + 1

4x - 2y = -9

• No Solution

• Infinitely Many Solutions

• (3, 7)

• (5, 11)

Solve by Substitution

x - 6y = 5

2x = 12y + 10

• No Solution

• (5, 0)

• Infinitely Many Solutions

• (0, -5/6)

Solve by Substitution

y = x

y = -3x + 4

• (2, 2)

• (4/3, 4/3)

• (0, 0)

• (1, 1)

Solve by Substitution

2y = x

x - y = 10

• (5, 10)

• (20, 10)

• No Solution

• (10, 5)

Solve by Substitution

x = 7 - y

2x - y = 8

• (9, -2)

• (9, 5)

• (5, 3)

• (5, 2)