A point is to be removed from the given graph to make it a function. The selected point will be .
A
(3, 40)
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B
(4, 30)
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C
(1, 20)
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D
(2, 30)
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Solution
The correct option is D (2, 30) A system is said to be a function if every input is associated with a unique output.
In the given graph points, one input have two outputs.
The pairs (2, 10) and (2, 30) have one input with two outputs. So, any one point from the pair of points (2, 30) and (2, 10) is to be removed from the given graph to make it a function.
From the options provided, we can see that (2,30) is to be removed from the graph.