a)
Using 2 points (6,9) and (10, 13)
b)
Slope = (13 - 9) / (10 - 6) = 4/4 = 1
Slope = 1
c)
Point slope form
y - 9 = 1(x - 6)
or
y - 13 = 1(x - 10)
Hope it helps
