You can put this solution on YOUR website! graph with 5 points f(x)= log2x the 2 subscripted.
y=log(base 2)x
Exponential form is 2^x=y
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Let x=0 then y=1
Let x=1 then y=2
Let x=2 then y=4
Let x=3 then y=8
Let x=-1 then y=1/2
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Cheers,
Stan H.