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sashaice [31]
3 years ago
9

Please helppp 15 pointsss What is the y-coordinate of the solution for the system of equations?

Mathematics
1 answer:
Lina20 [59]3 years ago
7 0

y = 3x - 1

x - y = -9


Subs y in second equation.


x - (3x - 1) = -9

x - 3x + 1 = -9

-2x = -9 - 1

-2x = -10

x = -10/-2

x = 5


Subs x


y = 3x - 1

y = 3.5 - 1

y = 15 - 1

y = 14


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