If so, write a justification. So pause this video and see if you can think about this on your own before we do it together. Okay, well let's just visualize what's going on and visually think about the intermediate value theorem. So if that's my y-axis there, and then let's say that this is my x-axis right over here, we've been given some points over here. We know when x is equal to zero, f of x is equal to zero. Let me draw those. So we have that point.