cadanceowasso
15.12.2020 •
Mathematics
Which pair of lines are perpendicular
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Ответ:
you're right!! its C
Step-by-step explanation:
For lines to be perpendicular, the multiplied slopes of the line need to be -1, so
y=1/3x-1
y=-3x-4
(1/3)*(-3)=-1
therefore, they are perpendicular
Ответ:
slope = (14 - 5) / (4 - 1) = 9/3 = 3
y = mx + b
slope(m) = 3
use either of ur points...(1,5)...x = 1 and y = 5
now we sub and find b, the y int
5 = 3(1) + b
5 = 3 + b
5 - 3 = b
2 = b <=== ur y int