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 = one-half***
8. 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 = negative one over two
m = –1

2 answers

parallel lines have the same slope
The line through (3, 4) and (2, 6) has slope (6-4)/(2-3) = -2
a perpendicular line has slope 1/2

The line through (–2, –1) and (2, –3) has slope -2/4 = -1/2
so a perpendicular line has slope 2
7 is 1/2
8 is -2
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