CPM Homework Banner

Find values of and that make each system of equations true (i.e., solve each system). Be sure to show your work or explain your thinking clearly.


    Remember that .

    You can use this fact to make the first equation , and then substitute for in the second equation.

    Solve for .


    Here are three possible methods for solving.

    Since , you can use substitution.
    Then solve for and substitute to find .


    Solve the first equation for and substitute into the second equation. Then solve for and substitute to find .

    Since neither nor can equal , divide the second by the first.