Question 769645: In this part of the question, you are asked to consider the trajectory
of the ball modelled by the equation y = −1/8x^2+9/8x+5/4 in conjunction with the results that you found in p(ii) Use your answer to part (a)(iii) to find the maximum height reached by the ball. [2]My answer - I found the vertex coordinates to be 4.5,3.8 therefore the maximum height is 3.8 meters is this correct?
(iii) What does the y-intercept represent in the context of this model? My answer: The Y intercept which in this case is 5/4 represents the initial height. Assuming that the ball is not returned, how far will it be
horizontally from where Maeve served it when it first lands on the
court? Explain your answer.My answer: It will be 10 meters because this is the x intercept.
Am i on the right track?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! In this part of the question, you are asked to consider the trajectory
of the ball modelled by the equation y = −1/8x^2+9/8x+5/4 in conjunction with the results that you found in p(ii) Use your answer to part (a)(iii) to find the maximum height reached by the ball. [2]My answer - I found the vertex coordinates to be 4.5,3.8 therefore the maximum height is 3.8 meters is this correct?
You are correct.
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(iii) What does the y-intercept represent in the context of this model? My answer: The Y intercept which in this case is 5/4 represents the initial height.
Correct
=============================
Assuming that the ball is not returned, how far will it be
horizontally from where Maeve served it when it first lands on the
court? Explain your answer.My answer: It will be 10 meters because this is the x intercept.
Correct.
Cheers,
Stan H.
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