In the definition of intercepts, it says THE y-intercept, but AN x-intercept. Sketch a graph which shows that a function could have more than one x-intercept. Explain why a fuction could not have more than one y-intercept.

How about the x-axis?
If it had two y intercepts then the line would coincide with the y-xis and have an undefine slope. Does that clairfy things?

because that's the way it goes

5x4x3x2x1=

ok, what is 5!?
5*4*3*2*1
Copy and paste that into google and see what you get.
Google is a calculator too.

Thanks. I just found out it is a converter also. example
45.6 lbs/m^3 in grams/ml

Nice.

After checking my first response I hope I was clear.
For the first question look at the x-axis. This is the line y=0.
For the second part, if the line coincides with the y-axis it's slope is undefined. The change in x would be 0 and we would be dividing by 0 which is not allowed.