Question

given that y in directly proportional to x and that y =40, when x=200find e value of y when x=15and find the value of x when y=8​

Answer 1

Answer:

hope this will help you

Step-by-step explanation:

Here are two more ways to arrive at the answer.

If y is inversely proportional to X, this means that

X1 : X2 = y2 : y1

Note that the order of X1 : X2 is reversed in y2 : y1. That’s the reason it is called inversely proportional. If X were proportional to y, we would have X1 : X2 = y1 : y2.

Filling in the known values gives

4 : 8 = y2 : 3 eq.

y2 = 3/2.

Another way of saying it is that if we multiply y by a factor, then we have to divide X by the same factor, or if we multiply X by a factor, then we have to divide y by the same factor.

Since X = 4 is multiplied by 2, we have to divide y = 3 by 2. This gives the answer y2 = 3/2.

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