Quiz3 Review

What is the solution to the system that is pictured?

• (1,3)

• (3,1)

• (1,1)

• (-1,1)

What is the solution to the system pictured?

• (1,1)

• (1,2)

• No Solution

• Infinitely Many Solutions

How would you solve this system?
 $-2x+4y=-12$  
 $3x\ -\ 4y\ =\ 10$  

• Graphing

• Elimination

Can you add this system right away?

 $2x-y=4$  

 $-2x+6y=16$  

• Yes, the x coefficients are opposites

• Yes, the y coefficient are opposites

• No, neither coefficients are opposites

Add the system together what do you get?

Type with no spaces.

What does y equal?

• 4

• 5

• 15

• 25

Substitute y into your first equation.

What is the new equation? Type with no spaces.

Solve for x.

• x = 8

• x = 2

• x = 4

• x = 16

Type your solution without spaces.

Use proper notation.

Can you add this system right away?

 $-3x+2y=11$  

 $-2x+2y=8$  

• Yes, the x coefficients are opposites

• Yes, the y coefficient are opposites

• No, neither coefficients are opposites