You will need
• calculator;
• - source data.
Instruction
1
Before finding the coefficient of proportionality, become acquainted with the properties of proportions. Suppose that the four differ from other numbers, each of which is non-zero (a, b, c and d), and the ratio between these numbers is as follows: a : b = c : d. In this case, a and d are the extreme members of the proportion, b and c, the average members per se.
2
The main property, which has a proportion: the product of its members equal to the result of multiplying the average of the members of this proportion. In other words, ad = bc.
3
However, the permutation average (a : c = b : d) and members of extreme proportion (d : b = c : a) the ratio between these values remains valid.
4
Two interdependent values of aspect ratio are related as follows: y = kx, provided that k is not equal to zero. In this par k is coefficient of proportionality, and y and x are proportional variables. A variable saying that it is proportional to a variable X.
5
The calculation of the coefficient of proportionality pay attention to the fact that it can be forward and reverse. The scope of the definition of direct proportionality – the set of all integers. From the formula of the proportional relationship of the variables, it follows that/x = k.
6
To find out whether this direct proportionality, compare private u/x for all pairs with the corresponding values of the variables x and y, provided that x ≠ 0.
7
If you compare private to the same k (the factor of proportionality not necessarily equal to zero), the dependence of x is directly proportional.
8
Inverse proportionality is manifested in the fact that an increase (or decrease) the same value several times, is proportional to the second variable decreases (increases) by the same factor.