## anonymous 5 years ago What is the general rule for finding the x-intercept of a function? Is it to factor and set equal to zero?

1. anonymous

For example $\left| 1divx \right|$

2. anonymous

lemme try that again... f(x) = $|1/x |$

3. anonymous

sorry toally looking at the wong problem For ex. f(x) = $x ^{2} - x -2$

The x intercepts are points where y=0 (point is on x axis. y f(x)=x^2-x-2 0=x^2-x-2 or as you suggested factor, (x-2)(x+1)=0 if this is true then one or both of the factors equal 0. This results in x=2 and x=-2

5. anonymous

thanks!