3 years ago

Witch one is a function?

Mathematics

2 answers:

mario62 [17]3 years ago

8 0

Answer: A

Step-by-step explanation: I hope I help you if it was wrong I'm sorry

kicyunya [14]3 years ago

5 0

<h3>Answer: Choice D</h3>

This shows a list of points where the x coordinate does not repeat. This means that any given x input leads to exactly one y output.

Something like choice A has x = 6 repeated; showing that x = 6 leads to both y = 11 and y = -9 at the same time. So this is why choice A is not a function. Choice B has x = 1 repeat, so it's not a function either. Choice C has x = 19 repeated, so it's not a function.

As a visual tool, you can use the vertical line test to check each set of points. If you are able to draw a single vertical line through more than one point on the graph, then it is not a function.

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