Line cd passes through points (0,2) and (4,6). which equation represents like cd?

(0,2)(4,6)
slope(m) = (6 - 2) / (4 - 0) = 4/4 = 1

y = mx + b
slope(m) = 1
use either of ur points...(0,2)...x = 0 and y = 2
now sub and find b, the y int
2 = 1(0) + b
2 = b

so ur equation is : y = x + 2 <==