Number 11 ,Explain pls

In Exercises 9-12, find a point c satisfying the conclusion of the MVT for the given function and interval. Then draw the graph of the func- tion, the secant line between the endpoints of the graph and the tangent line at (c, f(c)), to see that the secant and tangent lines are, in fact, parallel. 9. y = x2, [0, 1] 10. y = x2/3 [0, 8] 11. f (x) = [0, 1] 12. y = Vx, [0, 3] 1+ x