tolong dijawab dong. pakai cara pengerjaannya yah

gradien garis a
m = [tex] \frac{y2-y1}{x2-x1} = \frac{6-0}{0-(-3)} = \frac{6}{3} = 2 [/tex]
m1 x m2 = -1
  2  x m2 = -1
m2 = -1:2
      = - [tex] \frac{1}{2} [/tex] 

y = - [tex] \frac{1}{2} [/tex] x + c
0 = - [tex] \frac{1}{2} [/tex] (-3)+c
   =  [tex] \frac{3}{2} [/tex] + c
c =  0 - [tex] \frac{3}{2} [/tex]
   = -  [tex] \frac{3}{2} [/tex]

y = - [tex] \frac{1}{2} [/tex] x -  [tex] \frac{3}{2} [/tex]
------------------------------------------------------------  x 2
2y = - x - 3
x + 2y + 3 = 0 (B)