Definition for Proportional?
in proportion to
If y is proportional to x then y=kx+l where k and l are constants.
bendt:u gav the definition for linearly proportional and not proportional...
I've always been taught that proportional is linearly proportional. If you want to talk about other proportionalities you say e.g 'is proportional to the square'.
wen u say a number y is proportional to other x by a factor k, u mean to say that , y varies corresponding to variation in x^k. but since i guess ur now only in basics...wat bendt said holds for you :)
An equation stating that two ratio’s are equivalent
y=kx "y is proportional to x"
Direct proportion means that if x increaes then y increases 'proportionally' for example y = 3x means that the value of y will always be 3 times the value of x when x = 1 y will be 3, when x=2 y will be 6 etc Inverse proportion is if x increases then y decreases for exampole y = 3 / x. The constant is not always 3 of course that is why we use a letter like k meaning 'some constant : y = kx
@elecengineer That's 'y is directly proportional to x' to be more specific.
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