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Is y=9x+3 proportional or non-proportion and why?
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Is y=9x+3 proportional or non-proportion and why?

User Paul Hoffer
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It is proportional but not a direct proportion because you have an extra in your equation (+3)
User Jaredor
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It is proportional, as y increases in line with x, and they have a linear relationship.

However, it is not directly proportional, as the '+3' shows that when x=0, y =/= 0, so it is not directly proportional.
User TheNotMe
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