Consider the following graph. (Note: The curve ends at the point (7,6).)

The x y coordinate plane is given. The curve begins at the origin, goes up and right becoming less steep, the curve changes direction at (1, 3), goes down and right becoming more steep, passes through (2, 2), goes down and right becoming less steep, changes directions at (3, 1), goes up and right becoming more steep, passes through the point (4, 3), goes up and right becoming less steep, passes through (5, 4) almost horizontally, goes up and right becoming more steep, passes through the approximate point (6, 4.2) and ends at (7, 6).
(a)
Find the interval(s) on which f is increasing. (Enter your answer using interval notation.)

Correct: Your answer is correct.
(b)
Find the interval(s) on which f is decreasing. (Enter your answer using interval notation.)

Correct: Your answer is correct.
(c)
Find the interval(s) on which f is concave upward. (Enter your answer using interval notation.)
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Incorrect: Your answer is incorrect.
(d)
Find the interval(s) on which f is concave downward. (Enter your answer using interval notation.)

Incorrect: Your answer is incorrect.
(e)
Find the coordinates of the inflection point(s). (Order your answers from smallest to largest x, then from smallest to largest y.)
(x, y) =


Incorrect: Your answer is incorrect.



(x, y) =



(x, y) =