3. Solution: Find the vertex of the parabola. (Use your graphing calculator to find the coordinates of the vertex.) The x value will be the time it takes to reach the maximum height and the y value will be the height. To find when the ball reaches the ground again, use the calculator to find the second zero or root. (The x value will be the time.) In this problem the ball has no initial height. Sometimes there will be a height and sometimes there will not be initial velocity if the object is at rest. Read the problem very carefully .
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5. The maximum is the point (1,16). Using the graphing calculator you might need to round to the nearest integer at times. The maximum height is 16 after 1 second.
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10. Example # 1 = Example # 2 = = = Example # 3 = = = =
![h=initial height, v=initial velocity, and t = time ,[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)