Consider the following graph. y 12/ 10 8 6 4 8 10 (a) Estimate the input value of the inflection point. X = (b) Indicate the input interval(s) over which each of the following types of behavior occurs: increasing, decreasing, concave up, and concave down. The graph is increasing for all input shown. The curve is concave down when x is between 1 and the inflection point and is concave up when x is between the inflection point and 9. The graph is decreasing for all input shown. The curve is concave up when x is between 1 and the inflection point and is concave down when x is between the inflection point and 9. The graph is increasing for all input shown. The curve is concave up when x is between 1 and the inflection point and is concave down when x is between the inflection point and 9. The graph is decreasing for all input shown. The curve is concave down when x is between 1 and the inflection point and is concave up when x is between the inflection point and 9. Consider the following graph. 40 30 20 10 -2 (a) Estimate the input value of the inflection point. X = (b) Indicate the input interval(s) over which each of the following types of behavior occurs: increasing, decreasing, concave up, and concave down. The graph is decreasing over the interval -4