3.2 Solving Systems Algebraically.notebook
September 14, 2016
USING LINEAR COMBINATION (ELIMINATION) TO SOLVE LINEAR SYSTEMS
Use elimination to solve a system of equations when:
a. one of the variables in the equations has opposite coefficients.
b. the equations can be multiplied so that one of the variables has opposite coefficients.
Step 1: Make the coefficients of either x or y have the same
number but opposite in sign by multiplying one or both
equations by a number.
Step 2: Add the equations together and solve.
Step 3: Substitute your answer from step 2 into one of the
equations and solve for the other variable.
*Write your final answer as a point.
3.2 Solving Systems Algebraically.notebook
7.
8.
September 14, 2016
3.2 Solving Systems Algebraically.notebook
9.
2x ­ 3y = 0
3x ­ 2y = 5
September 14, 2016