what is the difference between Y=m(x-x1)+y1 and Y-y1=m(x-x1) and when do I know when to use each equation?

For how answer my question this will be the last question can you answer in math subject

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

When only separate discreet points are graphed it is called?