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3 years ago

If x+3y=7 and x-3y=1 what's y

Mathematics

1 answer:

vazorg [7]3 years ago

6 0

Subtract one equation from the other to eliminate x :

(x + 3y) - (x - 3y) = 7 - 1

6y = 6

y = 1

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3 years ago

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Step-by-step explanation:

The given line PQ passes through the points P(-5,-13) and Q(5,17) .

Find the slope using the formula:

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Plug in the points to get:

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