Best Method: Solving Systems of Equations

​Choosing the Best Method to Solve Systems of Equations

Multiple Choice

Which method would you choose to solve the following system of equations?

• Substitution

• Elimination

• Graphing

• None of these.

Open Ended

Explain why you answered the way you did on the previous slide.

​You should have chosen SUBSTITUTION. Since y is by itself in one of the equations but not the other, substitution would be the best method.

Multiple Choice

Now, solve using substitution.

• (7, -2)

• (-7, -2)

• Infinite number of solutions

• (7,-7)

Multiple Choice

Which method would you choose to solve the following system of equations?

• Substitution

• Elimination

• Graphing

• None of these.

Open Ended

Explain why you answered the way you did on the previous slide.

​You should have chosen ELIMINATION. Since both equations are in standard form, elimination would be the best method to use to solve.

Multiple Choice

Now, solve using elimination.

• (-8,6)

• (8,6)

• (6,8)

• (8,-6)

Multiple Choice

Which method would you choose to solve the following system of equations?

• Substitution

• Elimination

• Graphing

• None of these.

Open Ended

Explain why you answered the way you did on the previous slide.

​You should have chosen GRAPHING. Since both equations are in slope-intercept form, graphing would be the best method to use to solve.

Multiple Choice

Now, solve by graphing.

• (5,4)

• (-1,4)

• (1,3)

• (-3,3)

Multiple Choice

Which method is best to solve the system?

• Elimination

• Substitution

• Graphing

• None of these.

Multiple Choice

Now solve using the method you selected.

• (4,4)

• (4,-4)

• (7,4)

• (-4,4)

Multiple Choice

Which method is best to solve the system?

• Elimination

• Substitution

• Graphing

• None of these.

Multiple Choice

Now solve using the method you selected.

• (-8,6)

• (8,6)

• (6,8)

• (8,-6)

Multiple Choice

Which method is best to solve the system?

• Elimination

• Substitution

• Graphing

• None of these.

Multiple Choice

Now solve using the method you selected.

• (-2, -2)

• Infinite number of solutions.

• (-3,-2)

• (3,-2)

Multiple Choice

Which method is best to solve the system?

• Elimination

• Substitution

• Graphing

• None of these.

Multiple Choice

Now solve using the method you chose.

• (-4,2)

• (-4,-2)

• (2,-4)

• (-2,-4)