Question

y varies inversely as x. When y = 5, x = 12. Determine y when x = 15.

Answer 1

Is it 4?

Answer 2

5*12=y*15
so y=4 you're right :)

Answer 3

i think 12/5 = 2.4 so thats the factor
5 * 2.4 = 12
? * 2.4 = 15
(15*5)/12 = 6.25
or \[6\frac{ 1 }{ 4 }\]

Answer 4

Thank you! :)

Answer 5

given y=k/x,where k is a constant
when x=12 ,y=5
5=k/12,
or k=60
y=60/x
when x=15,y=60/15=4