Hi everyone. I searched the internet for a nice website, which explains the functions nicely. I was unable to find any good site, as most of the sites explains very advanced or very simple functions. Like... f(x)=bx or f(x)=bx^2. Or logarytmic functions. I don't need logarytmic functions, I need functions something like these: f(x)=ax+bx-c. For example: Find the range of: f(x)=-x^2+5x-6. Or:

y=ax^2+bx fraph goes trough points: (-1;1),(2;10). I need to find what is the a and b. Or calculate something like this: [5,8]+[-5,8]. Or... f(x)=4x-5 and I need to find a... vice versa function. Then graphs drawing... And... compare f(x)=x^6 and x^7, if f(3.5) and f(-4.2).

Those were examples of the exercises I have to do. Actually a) variant of each exercise, they have variants up until f or g sometimes. I don't have to do them as homework, but I'm having a test on Monday, and I'd like to get ready for it.

Hope you can help me out with this, thanks.