# algebra 1

in the equation thingy for y=mx+b how do you solve for b?

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1. If you know m, the slope and have a point (x,y), then you put those numbers in
For example
slope m = 2
line goes through point (2,3)
what is b?
y = m x + b
3 = 2 (2) + b
3 = 4 + b
b = -1
so
y = 2 x - 1

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posted by Damon

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