Gradien garis yg melalui titik (3,1) dan (6,4) adalah...

(3, 1) --> (x1, y1)
(6, 4) --> (x2, y2)

m = (y2 - y1)/(x2 - x1)
m = (4 - 1)/(6 - 3)
m = 3/3
m = 1

m = (y2 - y1) / (x2 - x1)
m = (4 - 1) / (6 - 3)
m = 3/3
m = 1