Answer with explanation:
⇒Equation of curve which represent Jake
Equation of Line Passing through , (0,2) and (2,3).

x -2 y +4=0,is the Linear equation which represent Jake.
⇒⇒⇒Equation of curve which represent Ralph
Line Passing through , (0,4) .
→y=4,is the equation which represent Ralph.
Ralph is moving with Constant Speed.
If you compare Ralph and Jake
X axis =Number of Weeks
Y axis =Distance in Kilometers
⇒For Ralph ⇒At, x=0, y=4,
at, x=1 ,y=4,.......at, x=7,8..., y=4.
⇒For Jake ⇒At,x=0, y=2, at,x=2, y=3,at,x=8,y=6.
Option B:
Ralph is skiing less than Jake.