Find the equation of the line that passes through the points (6,1) and (3,4)

(6,1) , (3,4)
slope = (4 - 1) / (3 - 6) = -3/3 = -1

y = mx + b
slope(m) = -1
use either of ur points(6,1)...x = 6 and y = 1
now sub and find b, the y int
1 = -1(6) + b
1 = -6 + b
1 + 6 = b
7 = b

so ur equation is : y = -x + 7

Iam confused on this my self