Question

1. Find the slope of a line that is parallel to the line containing the points (3, 4) and (2, 6). (1 point)
m = 1
m = 2
m = –2
m = 1/2


2. Find the slope of a line that is perpendicular to the line containing the points (–2, –1) and (2, –3). (1 point)
m = –2
m = 2
m = -2
m = –1

Answer 1

m = -2
m = 2

m is the change in y divided by the change in x.

So, for #1,
y changes from 4 to 6 (+2)
x changes from 3 to 2 (-1)
2/-1 = -2