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Persamaan garis yang melalui titik P(-2,4) dan Q(1,7) adalah?
1 Answer
- ?Lv 67 years agoFavorite Answer
Jadi garis itu melewati dua titik, yaitu (x1,y1) dan (x2,y2)
x1 = -2
y1 = 4
x2 = 1
y2 = 7
Rumusnya adalah :
y - y1 .......x - x1
______ = ______
y2 - y1.....x2 - x1
y - 4.........x - (-2)
______ = ______
7 - 4........1 - (-2)
y - 4.........x + 2
______ = _____
...3............3
3 (y-4) = 3 (x + 2)
3y - 12 = 3x + 6
3y - 3x - 12 - 6 = 0
3y - 3x - 18 = 0
jadi persamaan garis yang melalui titik P(-2,4) dan Q(1,7) adalah
3y - 3x - 18 = 0
Source(s): Hitungan sendiri
