I need help really fast! Please help! How do you graph the following logarithmic function (graphing technology)?

Question

anonymous · Answer

$$\log_{3} (x)-1$$ I just need the function that you type in

anonymous · Answer

@Hero

hero · Answer

That IS what you type in. You already have what to type in. What calculator are you using?

anonymous · Answer

geogebra... That's what they told us to use

hero · Answer

log[3]{x} - 1

I think

anonymous · Answer

is it a straight line? That's what I got

hero · Answer

No, it wouldn't be a straight line

nincompoop · Answer

all logs or roots have curve lines. you can test it yourself 
graph the simplest of their forms 
y = x^2
y = x^3
y = x^5
y = x^(1/2)
…. and so on

psymon · Answer

For the most part, the log graphs are going to be very similar with only minor differences with the base number change. Before any shift occurs, the point (1,0) always exists in a log graph and the y-axis is an asymptote. This is a general log graph:

|dw:1378289196332:dw|

Then from there, you just apply any shifts your graph my have. If the base is higher, like log base 100 or something, the curve will just be more like this:

|dw:1378289311453:dw|

Otherwise no huge differences. A graphing utility can just help you get more precision and certain points if needed, but not that must of a necessity for a basic graph ofit. Your function is log base 3 shifted down 1 :3