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Verified answer
MAPEL = MATEMATIKAKELAS = 8
BAB = PERSAMAAN GARIS LURUS
1.
diketahui =
gradien = -3
x1 = -5
y1 = 4
ditanya =
pers. garis ??
jawaban ➡ D.
2.
diketahui =
x1 = -3
y1 = 6
ditanya =
per. garis ??
- mencari gradien
bentuk umum ➡ ax + by + C = 0
m = -a/b
4y -3x = 5 ➡ 4y -3x -5 = 0
m = -(-3)/4
m = 3/4
semoga membantu
Verified answer
Mapel : MatematikaBab : Persamaan garis Lurus
1)
(-5,4) dan m = -3
y - y1 = m(x - x1)
y - 4 = -3(x - (-5))
y - 4 = -3(x + 5)
y - 4 = -3x - 15
y + 3x = -15 + 4
y + 3x = -11
D
2)
4y - 3x = 5
(-3,6)
Cara Cepat
ax + by = ax1 + by1
-3x + 4y = -3(-3) + 4(6)
-3x + 4y = 9 + 24
4y = 3x + 33
D