For Activities 1 through 6, a. Identify the graph as concave up or concave down....

For Activities 1 through 6,

a. Identify the graph as concave up or concave down.

b. If the graph shows a change in direction, estimate the input value corresponding to the maximum or minimum output value.

c. Indicate the input interval over which the function is increasing and the input interval over which the function is decreasing.