Question

The variable x varies directly as y. When y is 10, x is 3. When x is 9, y is?

Answer 1

Step-by-step explanation:

x varies directly y

y=kx

x=3/2;y=10

10=k∗

2

3

′

k

′

is constant.

k=

3

20

when x=9 & k=

3

20

y=?

y=

3

20

(9)

y=60

Answer 2

Step-by-step explanation:its direct proportion because it is said that x varies directly as Y. So answer is:-

10--3 ---------- 9--y2

Y= 2.7