tonyjoe3 tonyjoe3

11-05-2016
Mathematics

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Solve the system of equations.

2x + 3y = 1
y = 3x + 15

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apologiabiology apologiabiology

11-05-2016

since y=3x+15
sub 3x+15 for y in other equation

2x+3(3x+15)=1
2x+9x+45=1
minus 45
11x=-44
divide 11
x=-4

sub
y=3x+15
y=3(-4)+15
y=-12+15
y=3

(-4,3)

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