Is the sentence true or false?

Vertical line test is used to determine whether a curve is a function or not.

A function or mapping f from A to B is written as:

 Is the sentence true or false?

y = x+ 2 is a function.

  Is the sentence true or false?

If any curve cuts a vertical line at more than one point then the curve is a function.

  Is the sentence true or false?

$y=x^3$   is a function

 Complete:

Range is subset of ________.

1.   For a function $f$ :$A$ → $B$  what is codomain?

 Fill in the blanks:

A function is a relation in which a particular input gives a particular_________. 

 For a function $f$ :$A$ → $B$  what is domain?

   Fill in the blanks: 

f(x) = c, it is known as___ function.