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Rewriting Equations

by Samantha
(Canada)

How do I re-arrange x-y+2=0 to the y=mx+b so I can put it into a table of values?

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Sep 15, 2010
Rewriting Equations
by: Karin

Hi Samantha,

If you want to rewrite an equation from standard form (Ax +By = C) to slope intercept form (y=mx+b), you can do so by moving terms using the opposite operation.

Step 1: You want your equation to read y =, so you want to get all the terms except y on one side of the equation.

In this case, all you need to do is move the y term from the left to the right (by adding y to both sides):

x-y+y +2 = 0 +y

Then you are left with:

x +2 = y

You can then reverse sides so y is on the left.

y = x + 2 and this is the equation in slope intercept form.

Now you can complete your table of values.

Hope this helps,
Karin

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