Homework Help: Algebra

Posted by Linda on Monday, August 29, 2011 at 10:36pm.

Graph the relation then tell whether the relation is a function

The coordinates are: (0,-4), (0,4), (2,-3), (2,3). (4,-1)
(4,1)

After I graphed it I found that two of the point were on the y-axis so does that mean it is not a function? I might be getting it backwards though. If someone could just clear that up for me that would be great!

Algebra - MathMate, Monday, August 29, 2011 at 11:01pm
You have made a correct conclusion.
When two points are on the y-axis (also at x=2 and x=4), that means that the relations does not pass the vertical line test and it is therefore not a function.

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