The plot of current I flowing through a conductor versus the applied voltage V across the ends of a conductor is

The plot of current (I) versus the applied voltage (V) across a metallic conductor is generally a straight line, obeying Ohm’s law. Ohm’s law states that the current flowing through a conductor is directly proportional
to the voltage applied across its ends, at a constant temperature:
I = V / R
Where,
I is the current in amperes (A),
V is the voltage in volts (V),
R is the resistance of the conductor in ohms (Ω).
The relationship between current and voltage is linear, and the plot is a straight line passing through the origin (0,0) on the graph.

The slope of the straight line is equal to 1/R, where R is the resistance of the conductor. So, the steeper the slope, the smaller the resistance of the conductor.