Question

Which best describes the dimensions of a line? A line has zero dimensions because it represents a location on the coordinate plane. A line has one dimension because it is made up of all points that extend infinitely in either direction. A line has two dimensions because it is made up of three noncollinear points. A line has multiple dimensions depending on how many labeled points it contains

Answer 1

"A line has one dimension because it is made up of all points that extend infinitely in either direction."

Brief reason: a line is 1-dimensional — you need one coordinate (one degree of freedom) to locate a point on it. (Points are 0-dimensional; a plane is 2-dimensional, etc.)