Question

What is the slope of the line that contains the points (4, –1) and (–1, 4)?

A. –1
B. –5
C. 1
D. 5

Answer 1

slope = (y2 - y1) / (x2 - x1)
= (4 - -1) / (-1 - 4)
= 5/-5
=-1

Answer is A. –1