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Graph each pair...

 

y=log5X and Y=5x     I understand Y=5 and how to graph it  but I can't figure out how to get y=log5x in the x and y form because I thought rewritten it equals

 

y=5y=x so I'm confused.. Please help!

 Oct 31, 2015

Best Answer 

 #1
avatar+128732 
+5

y=log5X and Y=5x

 

These are inverse graphs........and inverse graphs have "reversed" coordinates.....

 

So, just plots some points for y = 5x    and then,  reverse the coordinates!!!.......this will give you the log graph...

 

For instance, when x = 1   51  = 5....so the point (1, 5)  is on the exponential graph

 

And on the log graph, we have the point (x, y) = ( 5,1)

 

Similarly  the point (-2, 1/25)  is on the exponential graph.....so the point ( 1/25, - 2) will be on the log graph

 

Here's an example using 10x and log10 x.............https://www.desmos.com/calculator/jbypfpwre3

 

Hope that helps.....

 

 

cool cool cool

 Oct 31, 2015
 #1
avatar+128732 
+5
Best Answer

y=log5X and Y=5x

 

These are inverse graphs........and inverse graphs have "reversed" coordinates.....

 

So, just plots some points for y = 5x    and then,  reverse the coordinates!!!.......this will give you the log graph...

 

For instance, when x = 1   51  = 5....so the point (1, 5)  is on the exponential graph

 

And on the log graph, we have the point (x, y) = ( 5,1)

 

Similarly  the point (-2, 1/25)  is on the exponential graph.....so the point ( 1/25, - 2) will be on the log graph

 

Here's an example using 10x and log10 x.............https://www.desmos.com/calculator/jbypfpwre3

 

Hope that helps.....

 

 

cool cool cool

CPhill Oct 31, 2015

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