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Given that x and y are in inverse proportion, and  y1, y2  are values of y corresponding to the values x1, x2 of x respectively. Which of the following is correct?


Options:
A .   x1y2=x2y1
B .   x1y1=x2y2
C .   x1x2=y1y2
D .   x1y1x2y2
Answer: Option B
:
B

If x and y are in inverse proportion, and y1, y2are values of y corresponding to the values x1, x2 of x respectively, then


          x1y1=x2y2



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