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08-11-2020
Mathematics

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Line m is perpendicular to x - 3y =-1 and passes through (9, 4). What is the slope of line m?

A. 1/3
B. -3
C. 4
D. 3

Respuesta :

ajjundi ajjundi

08-11-2020

Answer:

d)3

Step-by-step explanation:

y=mx+b

x-3y=-1

reform as the equation above

x+1=3y

simplify --> y=1/3x+1/3

perpendicular lines have opposite-reciprocal slopes

so the answer is 3

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