Solving Systems by Elimination and Subtraction

3x + 4y = 2

4x – 4y = 12

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

2x – 3y = 9

–5x – 3y = 30

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

3x – y = 26

–2x – y = –24

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

6x – 2y = 32

4x – 2y = 18

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

7x + 4y = 2

7x + 2y = 8

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Find the two numbers whose sum is 29 and whose difference is 15.

Tags

CCSS.8.EE.C.8C

x – y = 1

x + y = 3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which method would be best for solving the system shown?

9x - 4y = 12

9x + y = 1

• Substitution

• Elimination by addition

• Elimination by subtraction

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How many solutions does this system of equations have?

• One Solution

• No solution

• Infinitely Many Solutions

• Two Solutions

Tags

CCSS.8.EE.C.8A

If a system of linear equations has one solution, what does this mean about the two lines?

• Parallel lines

• the same line

• Intersecting lines

Tags

CCSS.8.EE.C.8A