How can I find the coeficients alpha, beta of the simple linear regression, using polyfit function?

How can I find the coeficients alpha, beta for the X coordinates of the simple linear regression, using polyfit function?

Answer 1

[Torsten]

x = (0:0.1:1).';
y = 3*x + 4 + 0.01*randn(numel(x),1);
polyfit(x,y,1)

ans = 1×2

2.9778 4.0097