Section 8.2 Part 2 Solving Systems by Substitution

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Solving Systems of Equations using Substitution

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Presentation transcript:

Section 8.2 Part 2 Solving Systems by Substitution Pre-Calculus 11 Chapter 8.2 Continued

I) Solving by Substitution When solving by Substitution, isolate a variable from one equation Then “substitute” that variable into the 2nd equation Isolate “y” variable from Substitute equation into Solve The intersection is at:

Practice: Solve by Substitution Isolate “y” variable from Substitute equation into Solve Solve for “y” using Therefore, the solution is:

Practice: Solve by Substitution Isolate “y” variable from Substitute equation into Solve Solve For “y” with:

Practice: Solve by Substitution

Ex1: Solve: Substitute equation 1 into 2. 1 2 The Solutions are:

Example 2: Solve the System: 1 2 Substitute equation 1 into 2. The Solutions are:

Ex3: Solve the System: 1 2 Substitute equation 1 into 2. The Solutions are:

Ex4 Solve the system: 1 2 Substitute equation 1 into 2. The Solutions are:

Ex5: Solve the system: 1 2 The Solutions are: Substitute equation 1 into 2. 2 The Solutions are:

Ex6: Solve the system: 1 2 Substitute equation 1 into 2. The Solutions are:

HW: Assignment 8.2 Part 2