Respuesta :

Answer:

-3

Step-by-step explanation:

ax + by + c = 0

Slope = -a/b

So, 3x + y = 15

Slope = -3/1 = -3

Answer:

-3

Step-by-step explanation:

3x+y=15

-3x -3x

y=-3x+15

*slope is the # in front of the x*