difference between direct and inverse proportion ....plz tell me fast ...............

Two quantities, x and y, are said to be in direct proportion, if they increase (decrease) together in such a manner that the ratio of their corresponding values remains constant. That is, , where k is a positive number.

Price of wheat  and weight of wheat that can be brought at a fixed rate are in direct proportion. More the weight of wheat, more will be the cost. Therefore, this is a case of direct proportion.

Two quantities, x and y, are said to be in inverse proportion, if an increase in x causes a proportional decrease in y (and vice-versa) in such a manner that the product of their corresponding values remains constant. That is, xy = k, where k is a positive number.

Number of employees and time taken to finish a work are in inverse proportion. More the number of employees, less will be the time taken to finish the work. Therefore, this is a case of inverse proportion.

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Just consider 2 things which are related to each other. And if one thing is increasing the second thing which is related to that thing is also increasing and similarly if one thing is decreasing and the second thing which is related to the first is also decreasing that will be called the direct proportion. For example if you purchase 5 eggs for 5 dollars and if you keep increasing the number of eggs the cost will be automatically increase so this is the example of direct proportion. I mean there is the direct proportion between the number of eggs and their cost.

And opposite to it if something is increasing while the other thing that is related to it is decreasing it will be called inverse proportion. For example if you're driving a car and the car speed is increasing while the distance is decreasing to your destination. That proportion will be called the inverse proportion. So this is difference between direct proportion and inverse proportions.

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Just consider 2 things which are related to each other. And if one thing is increasing the second thing which is related to that thing is also increasing and similarly if one thing is decreasing and the second thing which is related to the first is also decreasing that will be called the direct proportion. For example if you purchase 5 eggs for 5 dollars and if you keep increasing the number of eggs the cost will be automatically increase so this is the example of direct proportion. I mean there is the direct proportion between the number of eggs and their cost.

And opposite to it if something is increasing while the other thing that is related to it is decreasing it will be called inverse proportion. For example if you're driving a car and the car speed is increasing while the distance is decreasing to your destination. That proportion will be called the inverse proportion. So this is difference between direct proportion and inverse proportions.

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