V(x) is a function.

true or false?

When there are more the one values on right side for any value on left side , then it is not a function .

In the given figure as all the values on left side have single and unique answers on the right side ,

So yes V(x) is function.

TRUE

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.