Systems of Equations

Solve Using Substitution Method

y = –1x – 5

4x – 8y = 4

• (–3, –2)

• (5, –7)

• (3, 9)

• (–5, 4)

Solve Using Substitution Method:

y = 7x + 9

2y + 2x = –18

• (5, 0)

• (9, 18)

• (–2, –5)

• (1, 16)

Solve:

x = –3y – 17

2x + 3y = –7

• (1,–20)

• (3, 0)

• (–5, –2)

• (10 , –9)

Give the solution to the system

• (3,1)

• (1,3)

• (–1,3)

• (4,0)

^{What is the solution?}

• (–1, 1)

• (2, 0)

• (1, 2)

• (1, –1)

Solve for x and y. Use Elimination Method

3x + y = –5

6x + 2y = 10

• No Solution

• Infinite Number of Solutions

• (2,3)

• (6,–2)

What is the solution to the system? Use Elimination Method

x – 2y = 2

3x + 4y = 3

• (1.4, –0.3)

• (3.1, 5)

• (–2.5, 3.5)

• (6.9, 1.02)

Solve:

y = 4x– 10

y = 3x – 5

• (7 , –15)

• (1, –5)

• (5 , 10)

• (1, 2)

x = –6y

2x + 12y = 0

• (–6,1)

• (0,0)

• (1, –6)

• No solution

• Infinite Many on line

–3x + 5y = 17

x = 2y

• (–34, –17)

• (10, 20)

• (8, 4)

• No solution

• Infinitely many on line