Answer:
[tex]-\frac{4}{3}[/tex]
Step-by-step explanation:
To find the slope of a straight line only two known points on the straight line are sufficient.
If we take the first two points i.e. (-1,3) and (2,-1), then slope of the straight line will be [tex]\frac{3-(-1)}{-1-2} = -\frac{4}{3}[/tex] (Answer)
Note: Since we know that if a straight line passes through two points (x1,y1) and (x2,y2), then the slope of the straight line is given by [tex]m = \frac{y1-y2}{x1-x2}[/tex]
