Question

Which of the following graphs represents a function?

A.



B.



C.



D.



Select which graph represents a function:

(1 point)
Responses

A
A

B
B

C
C

D
D
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Answer 1

I can’t see the graphs you mean — could you upload them or describe each one?

How to decide yourself: use the vertical-line test. A graph represents a function iff every vertical line intersects it at most once (i.e., each x has at most one y). So:

- If any vertical line hits the graph in two or more points → NOT a function.
- If every vertical line hits the graph at 0 or 1 point → IS a function.

Examples:
- A typical upward parabola or slanted line → function.
- A circle or a sideways parabola → not a function.
- A graph with two different y-values at the same x (e.g., two separate dots stacked vertically) → not a function.

If you upload the images or describe each (e.g., “A: circle centered at origin; B: upward parabola; C: vertical line; D: slanted line”), I’ll tell you which option is a function.