Drill

Solve the linear system by substitution.

1. y = 6x – 11 -2x – 3y = -7

2. -4x + y = 6 -5x – y = 21

Drill

Solve the linear system by substitution.

1. y = -3x + 5 5x – 4y = -3

2. -3x + 3y = 4 -x + y = 3

TODAY IN ALGEBRA…

Learning Goal: 7.3 You will solve systems of linear equations by Elimination

Independent Practice

Ch. 7.1-7.3 Quiz on Monday

7.3 SOLVING LINEAR SYSTEMS BY ELIMINATION

STEPS FOR SOLVING A LINEAR SYSTEM BY ELIMINATION:

STEP 1: Multiply the equations if necessary so one of the variables in both equations have the same coefficient.

STEP 2: Add or subtract the equations to eliminate one variable.

STEP 3: Solve the resulting equation for the other variable.

STEP 4: Substitute in either original equation to find the value of the eliminated variable.

THIS IS MUCH EASIER WITH AN EXAMPLE!