We have to probably do a quick review of intercepts before going much beyond. Intercepts are the points on which the graph will cross the x or y-axis.
Determining intercepts is a fairly simple procedure. To determine the y-intercept of a function y = f ( x ) all we have to do is set x = 0 and evaluate to determine the y coordinate. In other terms, the y-intercept is the point (0, f (0)) . We determine x-intercepts in pretty much the similar way. We set y = 0 and solve the resulting equation for the x coordinates. Thus, we will have to solve the equation,
f ( x ) = 0