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melalui (2,-4) maka 3 (2)+5(-4)+c=0 ..... c= 14
jadi persamaan garis 3x+5y+14=0
b 5
rumus : y - b = m (x - a)
jawab :
y + 4 = - 3 (x - 2)
5 x 5 (dikali 5)
5y + 20 = -3 (x - 2)
5y + 20 = -3x + 6
5y = -3x + 6 - 20
5y = -3x - 14
y = -3x - 14
5 5