Solving Linear Systems by Substitution. AII, 2.0: Students solve systems of linear equations and inequalities (in two or three variables) by substitution, with graphs, or with matrices.

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ET 7.2a: Use substitution to solve . NO SOLUTION. Solve using elimination. x – y = 5 3x + 2y = 15. Multiply the first equation by 2 so that the coefficient of the y-terms in the system will be opposites. Then, add the equations together and solve for x. 2 x – 2y = 10 3x + 2y = 15.

Solve using substitution . 8x – 2y = 10 2x + y = 13 -4x + y = 9 x + 6y = 34. Solve using substitution . x – 2y = 10 2x + y = 16 -14x + 2y = 64 4x + 6y = 54. Solve using elimination. x – 2y = 10 2x + y = 16 -14x + 2y = 64 4x + 6y = 54.

Use substitution to solve systems of equations. Vocabulary. system of equations solution of a system of equations.

solve by substitution. 2x – y = -9 3x – 8y = -7. (-5 , -1). Simplify. a) (4x 3 y 5 ) 3. Solve for x :.

Solve Linear Systems by Substitution. What does solving a system mean?. In yesterday’s homework, we investigated Cool Copy Company and Bountiful Brochures. What happened when you graphed the lines? The lines intersected. What does that intersection mean?

Solve Systems of Linear Equations by Substitution. Honors Math – Grade 8. One way to find an exact solution to a system of linear equations is to use substitution . . Substitution is best used when one of the equations in the system is solved for either x or y .

y = x – 1. x + y = 7. Objective: Solve systems of equations by substitution. Solve systems of equations by elimination. Use substitution to solve the system of equations. Step 1 Solve one equation for one variable. The first equation is already solved for y : y = x – 1.

Objectives. Solve systems of equations by substitution. Solve systems of equations by elimination.

Section 7-2 Solve Systems by Substitution SPI 23D: select the system of equations that could be used to solve a given real-world problem. Objective: Solve systems of linear equations by substitution. Three Methods of solving Systems of Equations: Solve by Graphing

Solve by Substitution: Isolate one variable in an equation Substitute into the other equation with ( ) Solve the second equation Plug answer into first equation to find other variable. Created by Gregory Fisher. Problems taken from Glencoe Algebra II Workbook 3.2. X – 3y = 16