7.5-7.9 Review

What is the solution to the system?

(HINT: The solution of a system is the point of intersection)

• (0, 3)

• (1, -1)

• (-3, 1)

• (1, 3)

How many solutions will this system have? 

• No solution
• One Solution
• I Don't Know
• Infinitely Many Solutions

Solve by elimination:
4x+9y=28
-4x-y=-28

• (-7,0)
• (6,0)
• (-6,0)
• (7,0)

Solve by elimination:
3x+7y=23

-3x-7y=-17

• No solution
• ARN
• (-3,3)
• (3,3)

Solve by elimination:
-x+2y=17

2x+2y=-10

• ARN
• (-9,4)
• (-9,-4)
• (9,-4)

Solve by elimination:
7x-9y=29

7x+2y=-15

• (-4,-1)
• (-1.-4)
• (-1,4)
• (-1,6)

Solve the system

2x + 3y = 6

x + 2y = 5

• ( 4 , -3 )

• ( -3 , 4 )

• ( 3 , 4 )

• ( 4 , 3 )

Solve the system

2m + 3n = 6

-m + 2n = 5

• n = 2

• ( 2, -1 )

• ( 2 , 1 )

• ( -1, 2 )

Solve the system

3x - y = 4

2x - 3y = -9

• No Solution

• ( 3 , 5 )

• ( -3 , -5 )

• ( 5 , 3 )

Solve using elimination. 
 4x + 8y = 20
-4x + 2y = -30

• (-7,1)
• (2,-5)
• (-2,5)
• (7,-1)