algebra

I'm doing functions, and I need to write an equation that represents the relationship between X and Y.
(1,4),(2,7),(3,10),(4,13)
I see what it is, but i don't know how to write it in an equation?
it's like adding in the next odd number?

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  1. Y = 3X + 1 is the equation

    The increase in Y is always 3 times the increase in X. That is called the slope.

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    posted by drwls

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