A line has a slope of - 3/5. Which ordered pairs could be points on a line that is perpendicular to this line? Check all that apply. (–8, 8) and (2, 2) (–5, –1) and (0, 2) (–3, 6) and (6, –9) (–2, 1) and (3, –2) (0, 2) and (5, 5)
Mathematics · Middle School · Mon Jan 18 2021
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A line has a slope of - 3/5 and if a line perpendicular to it that slope is -5/3
a. (–8, 8) and (2, 2)
m=(y2-y1/x2-x1)
= (2-8)/(2+8)
= -6/10
= -3/5 (this is correct pair)
b. (–5, –1) and (0, 2)
m=2+1/0+5
= 3/5 (this is not correct pair)
c. (–3, 6) and (6, –9)
m= -9+6/6+3
= -3/9
= -⅓ (this is not correct pair)
d. (–2, 1) and (3, –2)
m= -2-1 /3+2
=-3/5 (this is correct pair)
e. (0, 2) and (5, 5)
m= 5-2/5-0
= 3/5 (this is not correct pair)