1. 2x-5y+20=0, m= 2. -x-y= -4, m= 3. 3y-6x-12=0, m=

m = -a/b dengan a = koefisien x dan b = koefisien y, dengan syarat x dan y satu ruas

1. 2x-5y+20=0
a = 2, b = -5
m = -a/b = -2/-5 = 2/5

2. -x-y = -4
a = -1, b = -1
m = -a/b = 1/-1 = -1

3. 3y-6x-12=0
a=-6, b=3
m = -a/b = 6/3 = 2

Gradien Garis
--------------------

Cara Mengerjakan :

1). 2x - 5y + 20 = 0 (a = 2, b = -5 , c = 20)
--> m = -2/b
--> m = -2/(-5)
--> m = 2/5

2). -x - y = -4
--> -x - y = -4
--> y = -x + 4, maka m = -1

3). 3y - 6x - 12 = 0 (a = -6, b = 3, c = -12)
--> m = -a/b
--> m = - (-6/3)
--> m = 6/3
--> m = 2

Semoga bisa bermanfaat
HHNS