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If the vertex of the parabola y = x^(2)-...

If the vertex of the parabola y` = x^(2)-8x+c` lies on x-axis then the value of c is

A

`-16`

B

`-4`

C

4

D

16

Text Solution

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PARABOLA-EXERCISE 1 A
  1. The focal distance of the point (4,2) on the parabola x^(2)=8y is

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  2. the eccentricity of the parabola y^2-2x-6y+5=0 is

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  3. If the vertex of the parabola y = x^(2)-8x+c lies on x-axis then the v...

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  4. If the ordinate of a point on the parabola y^(2)=4x is twic the latus ...

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  5. In the parabola y^(2)-2y+8x-23=0 the length of double ordinate at a di...

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  6. For a parabola the distance between the focus and the directrix is equ...

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  7. If (9,12) is one end of a double ordinate of the parabola y^(2)=16x th...

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  8. The focal distance of a point on the parabola y^(2)=8x whose focal dis...

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  9. The coordinates of the parabola y^(2)=2x whose focal distance is 5/2 a...

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  10. The point on the parabola y^(2)=36x whose ordinate is three times its ...

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  11. An equilateral is inscribed in the parabola y^(2)=8x with one of its v...

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  12. If Q is the foot of the perpendicular from a point p on the parabola y...

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  13. L and L are the ends of the latus rectum of the parabola x^(2)=6y. The...

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  14. The coordinates of an endpoint of the latusrectum of the parabola y^(2...

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  15. The angle subtended by the double ordinate of length 8a of the parabol...

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  16. If 2x+y+a=0 is a focal chord of the parabola y^(2)+8x=0 then a =

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  17. PQ is a double ordinate of the parabola y^(2)+4x . The locus of its po...

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  18. The ratio in which the line segment joining the points (4,-6) and (3,1...

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  19. The number of point of intersection of the circle x^(2)+y^(2)=2ax with...

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  20. If a ne0 and the line 2bx+3cy+4d =0 passes through the points of inter...

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