Question

Hi everyone! Can someone help me learn how to take these graphs I posted and write piecewise functions? Thanks! :o)

Answer 1

Sure, post them right away.

Answer 2

having a hard time with this...I guess everything is either > or < sense there are no closed circles...not sure

Answer 3

can anyone start by explaining the answer I posted?

Answer 4

@Kainui

Answer 5

hi kainui!
i'm slowly figuring it out using y2-y1/x2-x1 and point slope form

Answer 6

y=x

Answer 7

Yeah it's not really very specific here, which isn't a big deal if all you care about is integrating these, since whether one point is included as f(1)=0 or f(1)=1 it is only one infinitesimally small point that doesn't contribute to the area.

The way you're doing it seems fine with point slope form, I don't know if I really explained what you wanted.