Answer:communitive property?
Step-by-step explanation: I’m kind of unsure, but the parenthesis are switching places so I think so. IM SO SORRY IF I MADE YOU GET THIS WRONG!!!
Slope is rise over run so since it rose 4 and went 1 to the right the slope would be 4 because 4/1=4
P.S. The actual formula for slope is y2-y1 over x2-x1 so it would be 5-1/1-0 which again is 4/1