tentukan persamaan garis tegak lurus garis 2x+y+3=0 melalui D (3,5)
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`PGL
Gradien tegak lurus
2x + y + 3 = 0
m = -a/b
m = -2/1 = -2
m1.m2 = -1
-2.m2 = -1
m2 = -1/-2 = 1/2
Persamaan garis
y - y1 = m(x - x1)
y - 5 = 1/2(x - 3)
2(y - 5) = 1(x - 3)
2y - 10 = x - 3
2y = x - 3 + 10
2y = x + 7
Atau
- x + 2y - 7 = 0
____________×-1
x - 2y + 7 = 0
Semoga membantudan tetap semangat [answer.2.content]