Question

Please answer question need answer asap

Answer 1

So for graphs, to tell if its a function is to see how many points are on the x-line for the coordinate. Functions will only have one point on each x-line.

With the top left, x = 0 has 2 points on it, so that is incorrect.

With top right, x = -1 has 2 points on it, so its incorrect as well.

Bottom left has 3 points on x = 0, so that's incorrect.

Bottom right, however, has no x-line where there are two or more points on it, so it is a function.