Answer: The straight line will be seen in the graph.
Step-by-step explanation:
Charles law states that 'the volume occupied by the gas is directly proportional to the temperature(in Kelvins) of the gas when pressure is held constant'.
( at constant pressure)
When we represent this relation on graph by placing temperature at x axis and volume at y axis we will get a straight line starting from the origin. The slope of this graph will give us value of constant '1/k'.
As shown in the image attached.