Suppose that (y) varies with (x). write an equation for the inverse variation. y=4 when x=7 a: y= x/28 b: y=3x c: x= y/3 d: y= 28/x

y = k/x, where k is the constant
if x = 7 and y = 4
 4=k/7

k = 4*7 = 28
 

y = 28/x

 answer is D

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3