Because 16/5 and 48/15 are equivalent fractions
85/5
(50+35)/5
50/5 + 35/5
10+7=17
X and y vary inversely means y is inversely proportional to x, this means:
y=k/x, where k is a constant.
We are given that when x=-4, y=7/2, we replace these values to find k.
7/2=k/-4
k= (-4*7)/2=-14
So we have y=-14/x
Therefore, when x=4, y=-14/4= -7/2
This would be 3990 if you require a whole number but for a decimal it would be 3989.24
