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Question

The line y=−1 intersects the parabola y=x2−10x+24 at one point. Find the coordinates of the point of the intersection.

A
(5,1)
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B
(0,1)
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C
(5,1)
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D
(24,1)
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E
(35,1)
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Solution

The correct option is D (5,1)
Given y=1 intersects parabola at one point, put y=1 in parabola equation
We get x210x+24=1
x210x+25=0
(x5)2=0
x=5
Therefore, the point of intersection is (5,1).

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