Respuesta :
formula
a) y-y0= m(x-x0)
y-1=-3(x-3)
y-1=-3x-9
3x+y+8=0
b) y-y0= (y0-y1)(x-x0)/(x0-x1)
y-(-5)=(-5-(6))(x-(-1))/(-1-(3))
y+5=11(x+1)/4
4y+20=11x+11
11x-4y-9=0
a) y-y0= m(x-x0)
y-1=-3(x-3)
y-1=-3x-9
3x+y+8=0
b) y-y0= (y0-y1)(x-x0)/(x0-x1)
y-(-5)=(-5-(6))(x-(-1))/(-1-(3))
y+5=11(x+1)/4
4y+20=11x+11
11x-4y-9=0