Slope is rise/run
gains 4m height for every 3secons
rise=4m
run=3sec
slope=4/3
if takes 54seconds t
54 times 4/3=72 meters
max height is 72 meteres assuming that it starts from the ground level
No (unless you're talking about a whole number), for example...
0.2^2 = 0.04
Alright, so since anything can be squared, the domain is (-inf, inf)