What is direct ratio?

Two related quantities, one variable and the other variable. If the corresponding ratio (i.e. quotient k) of these two quantities is certain, these two quantities are called proportional quantities, and the relationship between them is called proportional relationship. For example: y/x=k( k must) or kx = y.

The significance of positive proportion

Two variables that satisfy the relation y/x=k(k is a constant) are said to be proportional. Obviously, if y is proportional to x, then y/x=k(k is a constant); Or vice versa, taking Dallas to the auditorium as an example, in the travel problem, if the speed is constant, the distance is proportional to the time; In engineering problems, if the work efficiency remains unchanged, the total amount of work is directly proportional to the working time. Note: k cannot be equal to 0.

Positive proportion and inverse proportion are the same and related.

Similarity: the relationship between things has two variables and a constant. Of these two variables, when one variable changes, the other variable will also change. The product or quotient of the corresponding two variables is certain.

reciprocal transformation

When the value of x in inverse proportion (the value of independent variable) is also transformed into its reciprocal, it is transformed from inverse proportion to positive proportion; When the value of x in a positive proportion (the value of independent variable) is transformed into its reciprocal, it is transformed from a positive proportion to an inverse proportion. 20 16 xiaoshengchu mathematics inverse proportion definition and test sites.

What is inverse proportion?

Two related quantities, one of which changes and the other changes, and the product of the corresponding two numbers in these two quantities is certain. These two quantities are called inverse proportional quantities. Their relationship is called inverse relationship. Where k=y*x (sure) x is not equal to 0, and k is not equal to 0. Simply put, if one thing increases, another thing decreases, he decreases, and another thing increases, the relationship between these two things is called inverse ratio.

The meaning of inverse ratio

Two variables that satisfy the relationship xy=k(k is a constant), we say that the relationship between these two variables is inversely proportional; Obviously, if y is inversely proportional to x, xy=k(k is a constant); Or vice versa, taking Dallas to the auditorium as an example, in the travel problem, if the distance is constant, the speed is inversely proportional to the time; In the work problem, if the total amount of work is fixed, the work efficiency is inversely proportional to the working time.