Question

16. VARIATION Direct Variation : If a a b then a = kb (where k is a constant and colo =k Inverse Variation :​

Answer 1

Worked out Examples on Variation

In variation we will follow step-by-step some of the worked out examples on variation. Variations are classified into three types such as; direct, inverse and joint variation. Using variation, application to simple examples of time and work; time and distance; mensuration; physical laws and economics.

Step-by-step explanation on worked-out examples on variation:

1. If A varies directly as B and the value of A is 15 and B is 25, what is the equation that describes this direct variation of A and B?

As A varies directly with B,

A = KB

or, 15 = K x 25

K = 2515

= 53

So the equation that describes the direct variation of A and B is A = B.

Answer 2

Answer:

A and B is A=B

Step-by-step explanation:

K=2515

K=53