tentukan persamaan garis melalui dua titik 1.c(3,2)dan d (8,12). 2.e(-1,-4)dan f(2,2). tolong bantu

1. m = (y2-y1)/(x2-x1)
= (12-2)/(8-3)
= 10/5
= 2
persamaan garis :
y-y1 = m(x-x1)
y-2 = 2(x-3)
y-2 = 2x-6
y = 2x-6+2
y = 2x-4

2. m = (y2-y1)/(x2-x1)
= (2-(-4))/(2-(-1))
= (2+4)/(2+1)
= 6/3
= 2
persamaan garis :
y-y1 = m(x-x1)
y-(-4) = 2(x-(-1))
y+4 = 2(x+1)
y+4 = 2x+2
y = 2x+2-4
y = 2x-2