Persamaan garis yang melalui titik a (3,-2) dan tegak lurus garis 2x – 3y – 4=0
Jawaban:
2x – 3y – 12 = 0
Penjelasan dengan langkah-langkah:
A(3,-2) >> x1 = 3 dan y1 = -2
2x – 3y – 4 = 0 >> a = 2, b = -3, dan c = -4
gradien (m) = -a/b = -2/(-3) = 2/3
Persamaan :
y – y1 = m(x – x1)
y – (-2) = 2/3(x – 3)
y + 2 = 2/3(x – 3)
—————————- × 3
3y + 6 = 2x – 6
2x – 3y – 6 – 6 = 0
2x – 3y – 12 = 0