Question

If y varies directly with x and y = 1.44 when x = 1.8, what is y when x = 6.3?(Show work) (3 pts)

Answer 1

This problem is about direct variations. We can solve it usig "the rule of three".

We know that y=1.44 when x=1.8, this is a given ratio which will multiply x=6.3

`6.3\cdot(1.44)/(1.8)=(6.3\cdot1.44)/(1.8)=(9.072)/(1.8)=5.04`

Therefore, when x=6.3, y=5.04.