What is the slope of the line passing through the following points: #(1,-2); (-2,-1)#? Algebra Graphs of Linear Equations and Functions Slope 1 Answer BRIAN M. Apr 15, 2016 #m = -1/3# Explanation: The formula for the slope of a line based upon two coordinate points is #m = (y_2-y_1)/(x_2-x_1)# For the coordinate points #(1,-2) and (-2,-1)# #x_1 = 1# #x_2 = -2# #y_1 = -2# #y_2 = -1# #m = (-1-(-2))/(-2-1)# #m = 1/-3# The slope is #m = -1/3# Answer link Related questions What is Slope? How can slope be undefined? How do you calculate slope from a graph? How do you calculate the slope given two points? How does a positive slope differ from a negative slope? How does change in the slope affect the steepness of a line? Why is the slope of a horizontal line is zero? How do you determine the slope of #(3, –5)# and #(–2, 9)#? How do you determine the slope of #(1/3, 3/4)# and #(–2, 6)#? How do you determine the slope of #(2,7)# and #(7,2)#? See all questions in Slope Impact of this question 1080 views around the world You can reuse this answer Creative Commons License