Answer:
1,4,6
Step-by-step explanation:
To find out if something is a function try the vertical line test. This means you should be able to draw a vertical line anywhere on the graph and it will only intersect with the graph once. A function is a relation in which each input has only one output. The graphs 1,4,6 all pass the vertical line test while the others do not.
I believe the answer is B
Answer:
-1/2 would be your answer :)