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garri49 [273]
3 years ago
10

Which are functions and which are non functions​

Mathematics
1 answer:
krek1111 [17]3 years ago
4 0

9514 1404 393

Answer:

  functions: A, C; non-functions: B, D

Step-by-step explanation:

A relation is not a function if any input value (x) maps to more than one output value (y).

On a graph, we apply the "vertical line test." If any vertical line intersects two or more points on the graph, it is not a function. We say it fails the vertical line test. The bottom graph (D) fails the vertical line test, so is not a function.

On a mapping, such as figure B or C, any input (x-value) that is the source of two or more arrows means the relation is not a function. The map of B is not a function.

The other choices (A and C) show a functional relation.

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