a. -6x + 4y = -24
b. 4x + 6y = 24
c. -4x + 6y = -24
d. 6x + 4y = 24
Garis 3x – 2y = -6 akan tegak lurus dengan garis…
Jawaban:
3x – 2y = -6
-2y = -6 – 3x
-2y = 6 + 3x
y = 3/2x + 3
m1 = 3/2
m1 . m2 = -1
3/2 . m2 = -1
m2 = -2/3
Cari yg gradiennya -2/3
4x + 6y = 24
6y = 24 – 4x
y = 4 – 2/3x
y = -2/3x + 4
Jawaban B