QUIZ 1

 $X+3Y\ =6$  
 $2X\ +\ 8Y\ =-12$  

• -8

• -24

• -12

• -36

 $1.50x\ +\ .50y\ =\ 78.50$  

 $x\ +y\ =87$ 

 FIND THE VALUE FOR X

• 35

• 45

• 65

• 23

 $-8y\ +y\ =-3$  

 $3x\ -8y\ =24$  

• 78

• 67

• 36

• 0

 $-7x\ -2y\ =-13$  
 $x\ -2y=11$  

• none

• -6

• -2

• -4

WHAT’S A SYSTEM OF EQUATIONS?

• ^{a set or collection of equations that you deal with all together at once}

• the process of equating one thing with another.

• Linear equations (ones that graph as straight lines) are simpler than non-linear equations, and the simplest linear system is one with two equations and two variables.

• None