write an equation for the relation given. Help???

Question

x l 1 l 2 l 3 l 4 l 5 l
-----------------------
y l 5l 7 l 9 l11 l 13 l

i know you fing the diferences, 2/1, and i have to put that into f(x) form, but i dont get how to put it in. i've done this before, so if you could just give me the equation - i don't need an explanation.

Answer 1

y = 2 x + 3 --- without explanation, as requested.

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