Question

please help! http://prnt.sc/ac4ply

Answer 1

What do you think? f(x) = x is a straight line right while the others are just points?

Answer 2

i believe so yes, its just so confusing...

Answer 3

Oops only one should be a point, the other should give you a constant

Answer 4

would you agree this is f(x), also note the closed and open dots as you get closed dots if it's \[\ge ~~~ or~~~\le \] while you get open if it's > or <

Answer 5

And then f(x) = -3 would give something as such right? Since it's saying your value is -3 for all values to the left of 0.