System of Equations Elimination Easy

In order to eliminate y, what should you do to the following system of equations?

x - 8y = 0

-7x + y = 0

• Multiply the second equation by 8

• Multiply the first equation by -1

• Multiply the first equation by -7

• Nothing (System is ready to eliminate y)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the solution to the system below? -4x + 2y = 8 12x - 7y = -30 (HINT: You need to change ONE of the equations!)

• (-1, 4)

• (4, 1)

• (-3, 6)

• (1, 6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• Infinitely Many Solutions
• No Solution

Tags

CCSS.8.EE.C.8A

Solve the system of equations.

Use scrap paper/dry erase to work this out

      x + 5y = -27

-2x - 5y = 24

• (3, 6)

• (-3, -6)

• (-3, -4)

• (3, -6)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

• (2, -2)
• (2, 2)
• (-2, 2)
• (-2, -2)

Tags

CCSS.8.EE.C.8A

The solution (x, y) to a system of equations is the point where they...? 

• Run off the graph

• Don't touch

• Intersect

• Exist

Tags

CCSS.8.EE.C.8B

Solve the system using elimination. Use scrap paper/dry erase to work this out. -4x-2y=-12 4x+8y=-24

• (5,6)

• (6,-6)

• (6,-2)

• (4,-3)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Two equations that produce the same line have _____ solution(s).

• no

• one

• infinitely many

Tags

CCSS.8.EE.C.8A

How many solutions does this system of equations have?

• one solution

• two solutions

• no solutions

• All of the above

Tags

CCSS.HSA.REI.C.7

What is the solution to the following system of equations?

• ( 3 , -1 )

• ( 7 , 7 )

• ( -1 , 3 )

• ( 1 , 1 )

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6