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x1= -2
y1=5
rumusnya
y-y1=m(x-x1)
[y-5=1/-3(x-(-2)) ] diilangin -3nya/ diilangi per2anya
= -3y+ 15 = 1(x+2)
-3y+15=1x + 2= pindah ruas
-3y+1x +15-2=0
-3y+1x+13=0 hasil akhirnya
maaf kloo salaah