How do I use the math tutor to plot on the same coordinate system? 

I am stuck on a problem with my homework.

It says to plot f(x)={2-x   -3(greater than or equal to) x (greater than) 1

                          e^x            x(greater than or less than)1

How do you plot them to show the e?

How do I prove this on maple through a graph? 

Here is my problem:

How many horizontal asymptotes can a rational function have? upport your answer with an explanation in your own words along with graphical support using Maple.

Plot on the same coordinate system:f(x)=square root of x  and g(x)= - square root x + 4-18 then use Maple text to describe in f(x)words the change in to create g(x). 

Give an example of a rational function with vertical asymptotes at x=6 and x=(-2) with a zero at x=3. Show both the function rule and a graph using Maple illustrating the required asymptotes and zero.

Please show me what function to use to graph this.  I'm very lost.