Explanation:
y is inversely to x
to remove inversely we use constant so let constant be k
y=k/x. (1)
now let find value of k
X=5, Y=4
put these in above equation(1)
4=k/5
4×5 =k
20=k
now when x increase to 7
x=5 increase to 7 x=12
now let find value of y put value of x and k in equation (1)
y=20/12
y=5/3