Respuesta :

apologiabiology
perpendicular has slope tha multiplies to -1
y=mx+b
m=slope
y=1/3x+b
1/3=slope
1/3 times what=-1?
-3 is answer

y=-3x+b
find b
given
(2,1)
(x,y)
x=2 and y=1 is a solution

1=-3(2)+b
1=-6+b
add 6
7=b

y=-3x+7

B is answer

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