3 years ago

What is the y-coordinate of the solution for the system of equations?

Mathematics

1 answer:

Alchen [17]3 years ago

7 0

Answer:

$y=5$

Step-by-step explanation:

we have

$x-y=-11$ ----> isolate the variable x

$x=y-11$ -----> equation A

$y+7=-2x$ ----> equation B

substitute equation A in equation B

$y+7=-2(y-11)$

solve for y

$y+7=-2y+22$

$y+2y=22-7$

$3y=15$

$y=5$

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