Help me draw a graph with the determination of the slope

Draw a horizontal axis (x-axis) for Current $I$ (in Amperes, A) and a vertical axis (y-axis) for Voltage $V$ (in Volts, V). Choose appropriate scales for both axes to accommodate the range of values. For current, the range is from $0.02 \text{ A}$ to $0.10 \text{ A}$. For voltage, the range is from $0.40 \text{ V}$ to $2.00 \text{ V}$.

Plot the following points on your graph paper:

• $(0.02 \text{ A}, 0.40 \text{ V})$
• $(0.04 \text{ A}, 0.80 \text{ V})$
• $(0.05 \text{ A}, 1.00 \text{ V})$
• $(0.08 \text{ A}, 1.60 \text{ V})$
• $(0.10 \text{ A}, 2.00 \text{ V})$

Draw a straight line that passes through or is closest to all the plotted points. Since the data is linear, the line should pass through all points.

To calculate the slope, choose two distinct points on the best-fit line. We will use the first and last data points for accuracy.
Point 1: $(I_1, V_1) = (0.02 \text{ A}, 0.40 \text{ V})$
Point 2: $(I_2, V_2) = (0.10 \text{ A}, 2.00 \text{ V})$

The formula for the slope $m$ is:

Substitute the values:

The unit $\frac{\text{V}}{\text{A}}$ is equivalent to Ohms ($\Omega$).

The slope of the V-I graph represents the resistance of the circuit.
The slope is $\text{20 } \Omega$.