Equations, Relations, and Functions
In This Chapter
- When is an equation a function?
- Important function properties
- Building your function skills repertoire
- The basics of parametric equations
I still remember the fateful day in Algebra I when the equation y = 3x + 2 became f(x) = 3x + 2. The dreaded function! At the time, I didn’t quite understand why we had to make the switch. I was a fan of the y and was sad to see it go. What I failed to grasp was that the advent of the function marked a new step forward in my math career.
If you know that an equation is also a function, it guarantees that the equation in question will always behave ...