# Proportional and directly proportionalWatch

#1
What's the difference?
0
1 year ago
#2
directly proportional means that as X doubles, Y doubles (they go up by the same ratio) but proportional means that they both go up but not by the same ratio; X could double but Y would quadruple.
0
#3
(Original post by 44shishkbb)
directly proportional means that as X doubles, Y doubles (they go up by the same ratio) but proportional means that they both go up but not by the same ratio; X could double but Y would quadruple.
So if X = Y^2 you would say they're proportional?

Does this relate to the graph? I think I remember hearing that if it goes through the origin then it's proportional
0
1 year ago
#4
(Original post by G.Y)
So if X = Y^2 you would say they're proportional?

Does this relate to the graph? I think I remember hearing that if it goes through the origin then it's proportional
X=Y² would be proportional, yeah because it goes through the origin so both statements are true there
1
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