Question

If x and y are directly proportional then which of the following is correct?
xy = constant
x/y = constant
x + y = constant​

Answer 1

Answer:

Although the theorem has long been associated with Greek mathematician-philosopher Pythagoras (c. 570–500/490 bce), it is actually far older. ... The theorem is mentioned in the Baudhayana Sulba-sutra of India, which was written between 800 and 400 bce. Nevertheless, the theorem came to be credited to Pythagoras

Step-by-step explanation:

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Answer 2

Answer:

your mouth and the screen is not