Exploring Systems of Equations with Substitution

What is the first step in the substitution method?

• Graph the equations.

• Combine like terms.

• Solve one of the equations for one of the variables.

• Check the solution.

Why is it recommended to solve for a variable with a coefficient of one?

• It makes the calculations easier.

• It is always the correct variable.

• It eliminates the need for substitution.

• It simplifies the graphing process.

In the first example, what is the value of y after solving the equation?

• 3

• 2

• 4

• 1

What do you do after finding the value of one variable in the substitution method?

• Check the solution.

• Graph the solution.

• Combine like terms.

• Substitute it back into one of the original equations.

In the second example, what is the value of x?

• 1

• 2

• 0

• -2

What is the final step in the substitution method?

• Check the solution.

• Graph the equations.

• Write the solution as a coordinate point.

• Combine like terms.

In the third example, what is the value of y?

• 1

• 3

• 4

• 2

What should you do if both equations have a variable by itself?

• Combine like terms.

• Pick one and substitute it into the other equation.

• Graph the equations.

• Check the solution.

In the final example, what is the value of x?

• 5

• 2

• 4

• 3

What should you do if you are still confused about the substitution method?

• Ask a friend for the answers.

• Skip the topic.

• Ignore the confusion.

• Re-watch the video and practice more examples.