You can put this solution on YOUR website! Graph the following : y=log4x
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Pick values for x and find y
Plot the points
Draw a curve thru them.
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y = log(4x)
eg
x = 1/4, y = 0 --> (1/4,0)
x = 2.5, y = 1 --> (2.5,1)
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Use Excel to do the calculation and make a table.