Question 763782: Match a graph to a given logarithmic function. I understand how to get logarithms back and forth, but then I'm asked to identify them on a graph. I also understand how to graph a given number by using -2, -1, 0, 1, 2 and then switching them, but as an equation such as: y=-log3(-X) on a graph, I don't see it. I tried using the numbers above but the test results gave a similar but different result. Please help, thank you.
Cesar
Answer by josgarithmetic(39616)   (Show Source):
You can put this solution on YOUR website! TWO Key ideas: Learn the shape of the basic exponential function; define logarithm function as the inverse of the exponential function AND learn the basic shape of the logarithm function graph.
Do those two key ideas help you?
If you reflect the exponential function graph through the line y=x, you get the logarithm function graph, and x and y values are exchanged, or switched.
A point, (a,b) on the exponential function graph will become the point, (b,a) on the logarithm graph.
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