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atroni [7]
3 years ago
8

Which relation is a function?

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
6 0

Answer:

A

Step-by-step explanation:

A function is that of which has only one x value. Therefore you are looking for the graph that does not have multiple x values. Doing a vertical line test to see whether there is more than one point on a line of the graph will show you that A is the only one that has one answer for each x value that is given. All the other graphs have two points for some of the x's, which makes them not a function.

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Assuming the dotted line touches the middle of the base of the triangle,

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x = 25 or -25

But since x needs to be a positive value,

x = 25

8 0
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