Tolong bantu di jawab ya dan pakai caranya makasih :)

m = ( y2 - y1 ) / ( x2 - X1 )
m = ( 3 - 5 ) / ( - 3 + 4 )
m = - 2 / 1
m = - 2

gradien saling tegak lurus
m1 . m2 = - 1
- 2 . m2 = - 1
m2 = ½

pers garis
y - y1 = m ( x - X1 )
y - 6 = ½ ( x - 0 )
y = ½ x + 6 ( dikali 2 )
2y = x + 12
2y - x - 12 = 0 ( B )