Which of the following relations is a function?
A. (2, 4), (-4, 6), (2, 3), (-6, 2)

B. (9, 1), (-4, 4), (2, 1), (9, 2)

C. (2, 4), (-4, 2), (9, 1), (-6, 2)

D. (2, 0), (-4, 3), (9, 1), (-4, 5)

Question

Which of the following relations is a function?
	A. 	 (2, 4), (-4, 6), (2, 3), (-6, 2)

	B. 	 (9, 1), (-4, 4), (2, 1), (9, 2)

	C. 	 (2, 4), (-4, 2), (9, 1), (-6, 2)

	D. 	 (2, 0), (-4, 3), (9, 1), (-4, 5)

anonymous · Answer

look at the data points, look for the points with the same x-value.
if there are data points with the same x value and different y values, the relation is not a function.

anonymous · Answer

(note to people answering questions: we are supposed to show them how to do the problem, not do the problem for them.)

anonymous · Answer

If you want to show whether relation is function then look at the domain of the function : first element in each case which should not be same if it is a function.. so look at the option and let me know which fulfills this.

anonymous · Answer

Im assuming its C ?
If im wrong could you give me a little more information on how to solve it.