Question

y is inversely proportional to x when y=7 x=9 work out an equation connecting y and x

Answer 1

Answer:

y = k/x

k = y.x = 7 x 9 = 63

Hence equation is

yx = 63

Answer 2

Given: y is inversely proportional to x and y=7 x=9

To find: an equation connecting y and x

Solution: Since it's given that y and x are inversely proportional to each other, so we can say that on multiplying one variable with some constant, we need to divide the other variable with the same constant.

We can write this relation as

x ∝ 1/y

or we can express it as

y= k/x

where k is called proportionality constant

now, we are given that coordinates y=7, x=9 satisfy this relation.

on putting values we get

7=k/9

k = 63

So the final expression for this relation will be xy= 63.