Y varies jointly with a and b squared. If y =144 when a =4 and b = 3, then what would a equal when y = 108 and b = 3

The actual width ( w) of a regulation soccer field is 90 meters (m), and the actual length is 120 meters (m). a coach has drawn a scale model of the field on a blackboard. if the longest side of his drawing is 18 cm, how long is the other side of the drawing( w)?

If a || b and e || f , what if the value of y ?

How do i solve uniform motion problems?