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