Question

Can someone please try and see if you understand what I'm asking.

Says to use vertcal line test to determine which graph represents a function.
one line is straight up and down
a complete circle(which i think)
an complete line from an angle
line from an angle half way and then the other way kinda like a >

Any help is helpful

Answer 1

Imagine your vertical line scanning across your graph from left to right.

If for any position, your line crosses or touches the graph in only one place, then your graph represents a function, otherwise it is not a function.