Question

Garis yang sejajar dengn garis 3x=9y=15 adalah..
a. 9y-3x = 15
b. y+3x = 15
c. 2y-6x = 9
d. 3x+x = 3

Answer 1

G : 3x + 9y + 15
gradien = m = -a/b = -3/9 = -1/3

syarat sejajar m1 = m2

a. -3x + 9y = 15
m = -(-3)/9 = 1/3
b. 3x + y = 15
m = -3/1 = -3
c. -6x + 2y = 9
m = -(-6)/2 = 3
d.kalo yang d 3y + x = 3 ==> x + 3y = 3
m = -1/3

jadi jawabannya d ..:)