Finding varible in equation from vectors.

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I have
x = [1 2 3]
y = [1 2 1]
m = [1 -1 0]
For the equation y = mx +c (linear expression) I want to find c (y intercept) for each. i.e here
1=1*1 + c (equation 1)
2=-1*2 + c (equation 2)
1=0*3 + c (equation 3)
How would I write this as a vectorized code where the values for c are stored in a matrix. Note I want to find c for each equation not for all. I can't use built in functions. I think I have to use ==? It must hold true if there was more equations or there values were changed.
Thanks,

Accepted Answer

Mischa Kim
Mischa Kim on 26 Mar 2014
Giuseppe, use
c = y - m.*x

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