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Home > CCA > Chapter 4 > Lesson 4.2.5 > Problem 4-81

4-81.

Solve the following systems of equations using any method. Check each solution, if possible. Homework Help ✎


  1. −2x + 3y = 1
    2x + 6y = 2
    9y = 3

    Find y then input the answer into one of the equations above to find x.


  1. Use the Substitution Method. The equivelant of x is already given.

    x = −6 and y = 2


  • Refer to parts (a) and (b) for help. Be aware of the −y in the first equation.


  • Use the elimination method like in part (a).

    Multiply the first equation by −3.