ill give a medal

Which of the following relations is a function?
(2, 4), (-4, 6), (2, 3), (-8, 2)
(2, 0), (-4, 3), (8, 1), (-4, 5)
(2, 4), (-4, 2), (8, 1), (-8, 2)
(8, 1), (-4, 4), (2, 1), (8, 2)

Question

ill give a medal

Which of the following relations is a function?
(2, 4), (-4, 6), (2, 3), (-8, 2)
(2, 0), (-4, 3), (8, 1), (-4, 5)
(2, 4), (-4, 2), (8, 1), (-8, 2)
(8, 1), (-4, 4), (2, 1), (8, 2)

abb0t · Answer

Plot each of them on a graph and if it passes the vertical line test, you have a function..

anonymous · Answer

*im confused*

abb0t · Answer

Those are points on a xy-coordinate graph. Plot each of them. Draw a vertical line. And if the vertical line only crosses the graph once, it is a function.

anonymous · Answer

|dw:1367415906230:dw|
like this

abb0t · Answer

yes. Now plot each point on your paper. for instance, if you have this:|dw:1367415993968:dw|