I am slightly getting confused at the presentation of regression models.
What would be the difference between these two:
$y = \beta_0 + \beta_1 x_1 + \beta_2 x_2$
$y = \gamma_0 + \gamma_1 x_1 + \gamma_2 x_2$
When are the different notations to be used?
I'm unable to search this concept well, so it's quite confusing as the literature seems to use the symbols on similar occasions.
Is it just a different symbol for the same thing or is there a specific explanation as to when each notation should be used?