Given a graph of a line
We will draw a line representing the rise and a line representing the run of the line.
the lines will be as shown in the following figure:
As shown:
The red line represents the rise and the yellow line represents the run
Slope = run/rise
Rise = 3 units
Run = 6 units
So, the slope =
![\text{slope}=-(3)/(6)=-(1)/(2)](https://img.qammunity.org/2023/formulas/mathematics/college/url85ejlvucv8wseur2l0i2gqutp4h0omt.png)
The sign of the slope is negative because the line makes an angle with the positive direction of the x-axis more than 90°