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Verified answer
Kelas 8 MatematikaBab Persamaan Garis
ax + by = c, tegak lurus, (p, q)
bx - ay = bp - aq
y = 3x - 5
3x - y = 5, tegak lurus, (4, -3)
-x - 3y = -1 . 4 - 3 . (-3)
-x - 3y = -4 + 9
x + 3y = -5
✩✩ B ✩✩
Verified answer
MAPEL = MATEMATIKAKELAS = 8
BAB = PERSAMAAN GARIS LURUS
diketahui =
x1 = 4
y1 = -3
tegak lurus dgn garis y = 3x - 5
ditanya = pers. garis?
- mencari gradien
bentuk umum
➡ y = mx + C
m1 = gradien
➡ y = 3x - 5
m1 = 3
karena Tegak lurus maka :
m1 . m2 = -1
3 . m2 = -1
m2 = -1/3
pers. garis :
jawaban ➡ B.
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