tolong bantu ya yg no 19 sama 20

19. c.1/2
20. c.3x+5y+19=0
maaf kalau salah

19. m= y2-y1 / x2-x1
      -3=8-5 / 2b-4b
      -3=3 / -2b
     -2b= 3/ -3
     -2b=-1
     -2b/-2=-1/-2
      b=-1/-2
      b=1/2

20. y-(-2) = -3/5 (x-(-3) )
(y+2)5 = -3(x+3)
5y+10 = -3x-9
5y= -3x-9-10
5y=-3x-19
= 3x+5y+19 = 0. (c)
yg 19 nggak tau..