Answer:
The slope or gradient of the line L will be: m = 3/8
Explanation
We know that the slope-intercept form of the line equation

where m is the slope or gradient and b is the y-intercept
Given the equation of the line

Let us solve for 'y' to write the equation in the slope-intercept form

Add -3x to both sides

simplify

subtract 20 from both sides

simplify

Divide both sides by -8.


Thus, comparing with the slope-intercept form


Thus, the slope or gradient of the line L will be: m = 3/8