Mathematics

Question

Substitution Method. Help please? #5 please!
Substitution Method. Help please? #5 please!

1 Answer

  • switch the second equation to equal y so...
    y=-2x-3
    then plug in for y in the first equation
    2x+4(-2x-3)=6
    2x-8x-12=6
    -6x=18
    x=-3
    now plug in for y
    2(-3)+y=-3
    -6+y=-3
    y=3

    answer (-3,3)
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