B
Penjelasan dengan langkah-langkah:
tegak lurus jika m1 x M2 = -1
(I) y = 3x + 5
m = 3
(Ii) y = 3 + 5x
m = 5
(iii) 9y + 3x + 5 = 0
3x + 9y + 5 = 0
m = -a/b = -3/9 = -1/3
(iv) y + 5x + 3 = 0
5x + y + 3 = 0
m = -a/b = -5/1 = -1
yang m1 x m2 = -1 adalah (I) dan (iii)
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B
Penjelasan dengan langkah-langkah:
tegak lurus jika m1 x M2 = -1
(I) y = 3x + 5
m = 3
(Ii) y = 3 + 5x
m = 5
(iii) 9y + 3x + 5 = 0
3x + 9y + 5 = 0
m = -a/b = -3/9 = -1/3
(iv) y + 5x + 3 = 0
5x + y + 3 = 0
m = -a/b = -5/1 = -1
yang m1 x m2 = -1 adalah (I) dan (iii)
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