Exploring Systems by Elimination

None of the above

Graphing

Substitution

Elimination

To graph the equations

To substitute one variable

To have a set of terms that match and then add or subtract the equations

To solve for one variable directly

4

3

1

2

Use graphing method

Solve directly for one variable

Use multiplication to create matching terms

Use substitution method

Forgetting to multiply the constant

Multiplying only the variables

Not lining up the equations

Using the wrong signs

2

1

3

4

(11/2, 1)

(5.5, 1)

(5.5, -1)

(11/2, -1)

Add the equations

Line up all variables and constants

Subtract the equations

Multiply the equations

Graph the solution

Substitute it back into one of the original equations

Multiply the equations again

Solve for the constant

Check the solution by graphing

Substitute the first variable's value back into one of the original equations

Multiply the equations

Add the equations