Help with fitting linear equation

I need help with my HW pls, I have a data set and I have to fit a linear equation on a given data to identify the intercept and the slope

Answer 1

[Sean de Wolski]

>>doc polyfit

Answer 2

[Thorsten]

 help robustfit

the final exampel contains also a standard linear regression using "regress".

Answer 3

[Star Strider]

And a third option:

B = [ones(size(x(:))) x(:)]\y(:);
slope = B(2)
intercept = B(1)

Answer 4

[Image Analyst]

See my attached polyfit demo that I have posted countless times.