Does this graph represent a function? Why or why not?
10+
O
A. No, because it fails the vertical line test.
O
B. Yes, because it has two straight lines.
O
C. No, because it is not a straight line.
D. Yes, because it passes the vertical line test.
In order for a graph to be a function, it has to only cross the vertical (up and down) lines that it covers once. Since this is an angle, it crosses all the lines in two different places, and isn't a function.
