Which among the following equations represents the given graph?

y = 2 x

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x - y = 0

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y = - x

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y = 3 x + 1

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Solution

The correct option is A $y = 2 x$
The points (-1,2) ,(1,2) , (0,0) lie on the line.
Substituting them in the equations we see that the equation
the points satisfy the equation (y = 2x).

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