X-Intercept
In mathematics, a zero, also sometimes called a root, of a real-, complex- or generally vector-valued function f is a member x of the domain of f such that f(x) vanishes at x; that is, x is a solution of the equation
f(x) = 0.
In other words, a "zero" of a function is an input value that produces an output of zero (0).
Every equation in the unknown x may easily be rewritten as
f(x) = 0
by regrouping all terms in the left-hand side. It follows that the solutions of such an equation are exactly the zeros of the function f. In other words "zero of a function" is a short sentence to denote a "solution of the equation obtained by equating the function to 0", and the study of zero of functions is exactly the same as the study of solutions of equations.
Okay, NOW we must do some mathematics… integer style! You see, we can’t let something like “X Intercept” go without doing some basic grade 10 Algebra. I’ll go easy on you, I promise!
