I am extremely confused on what you need done here so if you can explain it feel better then I’d be glad to help you.
The LCM of 24 and 72 is 72 :)
The answer will be 0.
4x+4=4x+4
=0
The slope is 4/5 and the y intercept is 1. To graph the equation start at 1 because that is where the graph crosses the y axis and go up 4 and over to the right 5 since the slope is positive.