Jawabanmu

2014-04-10T19:40:49+07:00
Y = mx + b
dik : 
y = 3 x=2 m = 5

3 = 5.2 + b 
3 = 10 + b 
b = 3-10= -7 (ini titik potong sumbu y nya)

y = 5x - 7


2014-04-10T19:53:50+07:00
Dik : m =5
       melalui titik (2,3)
Y-Y1 = m (X-X1)
Y - 3 = 5 (X-2)
Y-3=5x-10
Y-5X+7 =0