Tolong Di Jawab Ya Kakak Pakai Caranya No 32-33

MAPEL = MATEMATIKA
KELAS = 8
BAB = PERSAMAAN GARIS LURUS

34.
diketahui =
gradien = -4
x1 = 2
y1 = 1

ditanya =
pers. garis ?

[tex]y - y1 = m(x - x1) \\ \: \: y - 1 = - 4(x - 2) \\ \: \: y - 1 = - 4x + 8 \\ \: \: \: \: \: \: \: \: \: \: y = - 4x + 8 + 1 \\ \: \: \: \: \: \: \: \: \: \: y = - 4x + 9[/tex]
jawaban ➡ B.

34.
diketahui =
x1 = -1
x2 = 3
y1 = 0
y2 = -8

ditanya =
pers. garis ?

[tex] \frac{y - y1}{y2 - y1} = \frac{x - x1}{x2 - x1} \\ \: \frac{y - 0}{ - 8 - 0} = \frac{x - ( -1 )}{3 - ( - 1)} \\ \: \: \: \: \: \frac{y - 0}{ - 8} = \frac{x + 1}{4} \\ 4(y - 0) = - 8(x + 1) \\ \: \: \: \: \: \: \: \: \: \: \: 4y = - 8x - 8 \\ 4y + 8x + 8 = 0[/tex]
jawaban ➡ C.

semoga membantu