Question

Tolong dijawab ya
14.persamaan garis yang melalui titik (-2,-3) dan tegak lurus garis 2x-5y+3=0 adalah....
15.lihat di gambar

Answer 1

14.) ax + by + c = 0
m = -a /b
2x -5y +3 = 0
m = -2/-5 = 2/5
tegak lurus maka m1 . m2 = -1
2/5 . m2 = -1
m2 = -5/2

y - y1 = m2(x - x1)
y - (-3) = -5/2(x -(-2))
y +3 = -5/2x -5
y = -5/2x -8
---------------------- × 2
2y = -5x -16
5x +2y +16 = 0. A

ax + by = ab
3x -4y = 3.(-4)
3x -4y = -12. A

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