A single equation representing both lines x+y=0 and x+2y = 0 is ?

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Markdorison asked Mar 13, 2022

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A single equation representing both lines x+y=0 and x+2y = 0 is ?

Mathematics
high-school

Markdorison asked Mar 13, 2022

by Markdorison

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1 Answer

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Answer:

The single equation is
y = 0

Explanation:

We are given the following system of equations:

x + y = 0

x + 2y = 0

From the first equation:

x = -y

Replacing in the second equation:

-y + 2y = 0

y = 0

The single equation is
y = 0

Steve Kinyon answered Mar 19, 2022

by Steve Kinyon

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