tolong yaa akai caranyaa nonor 17

- Persamaan Garis Lurus -

cari gradien garis g
2x+3y = 12
3y = -2x+12
y = -2/3x + 4

maka, mg = -2/3

cari gradien garis k
ax+5y = 40
5y = -ax + 40
y = -a/5x + 8

maka, mk = -a/5

mg dan mk saling sejajar
mg = mk
-2/3 = -a/5
-3a = -10
a = 10/3

Jawaban : B
semoga membantu
-vin