iii.If x and y are inversely proportional, then which one is true?
x1/y1 = x2/y2
x1.x2 = y1.y2
x1/x2 = y2/y1
none of these
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Answer:
iii) x1/x2=y2/y1
Step-by-step explanation:
Given that, x=k/y, where k is random constant
so, xy=k
thats means, for any pair like (x1,y1), (x2,y2)..... the xy product will always be a constant k.
So, x1y1=k
x2y2=k
.
.
.
xnyn=k
Clearly, x1y1=x2y2=x3y3=.......=k
And this only satisfies the 3rd option
x1/x2=y2/y1
=> x1y1=x2y2
So, (iii) is correct
#Happy_problem_solving
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