The slope of the line in the graph is -3/2
How to find the slope?
if a slope passes through two points (x₁, y₁) and (x₂, y₂), then the slope of the line is given by the equation:
a = (y₂ - y₁)/(x₂ -x₁)
In the graph we can see two points which are (-1, 3) and (3, -3), then we will get the slope:
a = (-3 - 3)/(3 + 1) = -6/4 = -3/2