Given line L = ax + by + c = 0, b(its suppose to be the equal sign with the slash going thru it) 0

What is the slope of this function?

-a/b
a/b
b/a

Respuesta :

ax + by + c = 0
by = - ax - c
  y = -a/b (x) - c/b

so slope = 
-a/b

answer
-a/b

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