Question

Y varies inversely with X. When X=5, Y=4, What is the value of Y when X increases to 7.

Answer 1

Step-by-step 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