x intercept

The x-intercept(s) of a function are the points at which the graph of the function intersect the x-axis. They are also referred to as zeros since the intersections are the points where the y-value of the function is equal to zero. The zeros of a polynomial are also referred to as roots.

How to find the x-intercepts of a function

The x-intercepts of a function are the points at which the function is equal to 0, or, using typical function notation, f(x) = 0 (also y = 0). Thus, given the equation of a function, setting the function equal to 0 and solving for x will yield the x-intercept(s) of the function.