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indirect variation

Step-by-step explanation:

Lets take first two columns and check

When x=5 , y =2

When x= 10, y = 1

Lets check with direct variation, y =kx

When x=5 , y =2

2 = 5k

Now we check whether we get y=1 when x=10

y=kx

y=4

So given table is not a direct variation

Lets check with direct variation, y =k/x

When x=5 , y =2

k = 10

Now we check whether we get y=1 when x=10

y=1

we Check with one more value

from the table , x=20, y=1/2

So

Hence given table is a indirect variation

Equation is

the answer is 8/21

hope this