Question

Use the vertical-line test to determine which graph represents a function.

Answer 1

http://prntscr.com/31g3r9 choices A and B
http://prntscr.com/31g443 choices C and D

Answer 2

neither A nor B pass the "horizontal line test"

Answer 3

D

Answer 4

D is a vertical line, if there's no vertical lines that intersect the graph then it passes the vertical line test

Answer 5

i have a question
what would be the difference between C and D

Answer 6

In D, as you can see, there's point intersects at more than one point
in C, there's no points intersecting at more than one point

In graph D, when you draw a vertical line, it has two points

In graph C, when you draw a vertical line, it has only one point intersecting to it