Finding varible in equation from vectors.

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,

Answer 1

[Mischa Kim]

Giuseppe, use

 c = y - m.*x