Question

If y is inversely proportional to x, is x inversely proportional to y? Explain your answerwith an example.

Answer 1

Answer:

Example: y is directly proportional to x, and when x=3 then y=15.

What is the constant of proportionality?

They are directly proportional, so:

y = kx

Put in what we know (y=15 and x=3):

15 = k × 3

Solve (by dividing both sides by 3):

15/3 = k × 3/3

5 = k × 1

k = 5

The constant of proportionality is 5:

y = 5x

Step-by-step explanation:

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