exponential equation for an exponential line with points (1,1) (2,2) (3,4) and (4,8)
Here's one generated from Wolframalpha : https://www.wolframalpha.com/input/?i=exponential+equation++(1,1),+(2,2),+(3,4),+(4,8)
y = 0.5 e^(0.693147 x)
Here's the graph : https://www.desmos.com/calculator/flgzerupyk
Or simply: y = 2^(x-1)
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