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Question
The points on the parabola y2=36x whose ordinate is three times the absicca are 
Options:
A .  (0, 0), (4, 12)
B .  (1, 3), (4, 12)
C .  (4, 12)
D .  None of these
Answer: Option A
:
A
y1=3x1 . According to given condition 9x21=36x1
x1=4,0y1=12,0
Hence the points are (0,0) and (4,12).

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