Thread:ClariS/@comment-3017217-20141115175820/@comment-3017217-20141127222556

1,2,3 will be answered below

Elasticity is the quotient between the difference in x and the product of the difference in y and the value of x.

Complementary for 1

Elasticity is used to measure the relation between 2 variables.

If coffee becomes cheaper what will be happen to sugar.

x ^ ε = y i think it was something like that but this was in a lecture and I cannot find it in the book