Question

input = 1 exactly one output, which is 2
when the input is 2, how many outputs
are there?

• exactly one output, which is 1
• exactly one output, which is 2
• more than one output

Explanation:

Step1: Analyze the graph

The graph has points plotted. For input (x - value) = 2, we check the y - values (outputs) corresponding to x = 2. Looking at the graph, when x = 2, there is exactly one point, so there is exactly one output. Wait, no, wait. Wait, the x - axis: let's check the coordinates. The point at x = 2: looking at the graph, the point at x = 2 has y = 1? Wait, no, the graph: x = 1 has y = 2; x = 2 has y = 1; x = 3 has y = 2 and y = 3; x = 4 has y = 3. Wait, no, the question is about input = 2. So for x = 2, how many y - values (outputs) are there? Looking at the graph, at x = 2, there is one point (since there's only one dot at x = 2). Wait, no, the options: the first option is exactly one output (1), the second is exactly one (2), the third is more than one. Wait, let's re - examine the graph. The x - axis is from 0 to 5, y - axis from 0 to 5. The points: (1,2), (2,1), (3,2), (3,3), (4,3). So when x = 2, the only point is (2,1), so output is 1? Wait, no, the first option says "exactly one output, which is 1", the second "exactly one output, which is 2", third "more than one". Wait, maybe I misread the graph. Wait, the user's graph: let's see, the dot at x = 2: looking at the grid, x = 2 (the third column? Wait, x = 0,1,2,3,4,5. So x = 2 is the third vertical line? Wait, no, x = 1 is the second vertical line (since x = 0 is first). So x = 2: the point is at (2,1) (y = 1). So when input is 2, the output is 1, and there's exactly one output. Wait, but the first option is "exactly one output, which is 1". So the correct option should be the first one? Wait, no, let's check again. Wait, the problem: when input is 2, how many outputs? The graph: at x = 2, there's one point, so exactly one output, which is 1. So the first option: "exactly one output, which is 1".

Step2: Match with options

So the correct option is the first one: "exactly one output, which is 1".

Answer:

exactly one output, which is 1 (the first option among the three given options)