We need __________ coordinates for representing a point on the graph sheet.
Graph: A graph is determined as a mathematical structure that represents a particular function by connecting a set of points.
On graph, any point can be represented uniquely with two independent information.
The location of any point on a graph is expressed by a pair of values (x, y) and these pairs are known as the coordinates.
To represent the point on the graph we need two or a pair of coordinates, where one represents the x coordinate and the other represents the y coordinate.
Hence, the answer is two or a pair.