Respuesta :

It's a linear equation so it's going to produce a line.

x-y=4

This means that:

y=x-4

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When x=0, y=-4.

When y=0, x=4.

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Draw a line that goes through the points (0, -4) and (4, 0).
Ok, I would bend over backwards! :)

x−y=4

Add -x to both sides.

x−y+−x=4+−x

−y=−x+4

Divide both sides by -1.

−y/−1 = −x+4/−1

y=x−4


Graphing shown below.
Ver imagen Аноним

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