Find the slope of the line passing through the pair of points or state that the slope is undefined. Then indicate whether the line through the points​ rises, falls, is​ horizontal, or is vertical.left parenthesis 4 comma 0 right parenthesis and left parenthesis 0 comma 2 right parenthesisSelect the correct choice below and fill in the answer box within your choice.
a.The slope is nothing. ​(Type an integer or a​ fraction.)
b.The slope is undefined.