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Verified answer
Pelajaran :MatematikaKelas :8
Bab :3
Nama Bab :Persamaan Garis
Kode mapel:2
Kode :8.2.3
Jawab:
19)
m1=y1-y2/x1-x2
=-4-(1)/3-(-2)
=-5/5
=-1
m1×m2=-1
- 1×m2=-1
m2=-1/-1
m2=1
y-y1=m(x-x1)
y-(-4)=1(x-3)
y+4=x-3
y-x=-3-4
y-x=-7