Does this curved line represent a function? If not, at what points does it fail the vertical line test?

It is a function.

Step-by-step explanation:

If you use the Vertical Line Test, you can see that each x-value has its own y-value.

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

f(x)=4

step-by-step explanation: