Question

Let x and y be inversely related such that y = 2 when x = 5. Find y when x = 15

Answer 1

y=2/3

Explanation:

first make the equation to interpret the question

x=k/y

find the value of k, which is a constant

when x=5 and y=2

5=k/2

k=10.

hence, find y when x=15

x=k/y

x=10/y

15=10/y

cross multiply

15y=10

divide both sides by 15

y=10/15

y=2/3

Answer 2

y would be 6

Explanation:

Because 5 x 3 would be 15

then you would do 2 x 3 would be 6