Question

X and y vary inversely, and y =7 when x = 4. What is the constant of variation?

Answer 1

Y doesn't vary directly with x

Answer 2

Answer:28

Explanation:

X varies inversely as y

X©1/y

X=k/y

4=k/7

Cross product

We get 4×7=k×1

28=k

Therefore constant (k)=28