Tolong nomor 3 ya!!!!
S (1, -3p)
x1 = 1
y1 = -3p
D (-4, 2p – 5)
x2 = -4
y2 = 2p – 5
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koordinat S
S (1, -3p)
<=> S(1, (-3)(-2))
<=> S(1, 6)
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koordinat D
D (-4, 2p – 5)
<=> D (-4, 2(-2) – 5)
<=> D (-4, -9)