1. Use ELIMINATION (also known as LINEAR COMBINATIONS) !!
If it is not easy to isolate one of the variables in a system OR is too large or complex to graph
Use ELIMINATION (also known as LINEAR COMBINATIONS) !!
STEPS:
1. Look for *
2. ADD
3. SOLVE
4. SUBSTITUTE
5. The values of x and y
6. CHECK
*Remember: The solution to a system is an ordered pair (x , y) that makes the equation true.
an “additive inverse” with one of the variables
Example:
2x + y = 4
x – y = 2
Multiply one or both of the equations by a constant to “MAKE” an additive inverse (if necessary)
the resulting equations
for the remaining variable
to find the value of the other variable
make the ordered pair solution
the solution in each of the original equations

2.
Your school sold 163 tickets to a basketball game. An adult ticket costs $ A student ticket costs $ The total ticket sales were $235. Write a system of equations to find the number of each type of ticket sold.