Question

Assume that y varies inversely with x and that y is 2 when x is 4. Which of the following is the equation of inverse variation?

Answer 1

Where are the equations?

Answer 2

y = 2x
xy = 8
y/x = 2

Answer 3

Substitute the value of x & y in the equations & find out which equation is right

for example
lets take the last one
y/x =2

y=2 x=4

2/4=1/2≠ 2

1/2 is not equal to 2 therefore third one is wrong

try the other two