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7-11.

Solve the systems of equations below. Homework Help ✎

Read the Math Notes box in Lesson 6.2.3 to review the Substitution Method. Use it to solve both parts.


  1. To start part (a) substitute in for into the second equation . So .

    Solve for .

    Once you solve for , substitute that value in for into one of the original equations: or .
    Solve for .

    Put the answer in point form .
    The final answer is .


  1. Substitute () in for in the second equation
    .

    Follow steps and from part (a).

    Read the Math Notes box in Lesson 6.4.1 to review the different types of solutions for systems of equations.