Jawaban:
a) dua garis dikatakan sejajar bila media gradiennya sama
(m1=m2)
b) dua garis dikatakan saling lurus bila hasil kali gradiennya = -1
(m1 . m2 = -1)
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Jawaban:
a) dua garis dikatakan sejajar bila media gradiennya sama
(m1=m2)
b) dua garis dikatakan saling lurus bila hasil kali gradiennya = -1
(m1 . m2 = -1)