How do you convert $x+y=3$ to $y=mx+b$ ?

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Answer 1 · 2015-04-09T19:19:22

If you subtract $x$ from both sides of $x+y=3$
you get
$y = 3-x$
or by rearranging the right side
$y = (-1)x + 3$
with $m=(-1)$ and $b=3$

How do you convert x+y=3x+y=3 to y=mx+by=mx+b?