tolong dijawabb no 1 aja yaa terimakasih:)

2x - 3y = 12
     3y = 2x - 12
       y = [tex] \frac{2}{3} [/tex]x - 4
maka gradiennya atau m = [tex] \frac{2}{3} [/tex]

y - y1 = m(x - x1)
  y - 5 = [tex] \frac{2}{3} [/tex](x + 3)
----------------------------------------------- x 3
3y - 15 = 2 (x + 3)
3y - 15 = 2x + 6
        3y = 2x + 21