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The point (-4,5) is the vertex of a squa...

The point (-4,5) is the vertex of a square and one of its diagonals is 7x-y+8=0. The equation of the other diagonal is :

A

7x-y+23=0

B

7y+x=30

C

7y+x=31

D

x-7y=30.

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
  1. For the two circles x^2+y^2= 16 and x^2+y^2-2y=0 there is/are :

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  2. If C is a point on the line segment joining A (-3, 4) and B (2, 1) suc...

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  3. The point (-4,5) is the vertex of a square and one of its diagonals is...

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  4. The vertices of a family of triangles have integer co-ordinates. If tw...

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  5. A line has slope m and y-intercept 4. The distance between the origin ...

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  6. One side of length 3a of a triangle of area a^2 square units lies on t...

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  7. The distance of the point (1, 2) from the line x+y+5 = 0 measured alon...

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  8. Area of the triangle formed by the lines y=2x, y=3x and y=5 is equal t...

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  9. Triangle ABC has vertices (0, 0) (11, 60) and (91, 0). If the line y= ...

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  10. If the lines y= 3x + 1 and 2y = x + 3 are equally inclined to the line...

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  11. The vertices of a triangle are (3, 0), (3, 3) and (0, 3). Then the coo...

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  12. Area of the equilateral triangle inscribed in circle x^2+y^2 -7x+ 9y+5...

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  13. The equation of one of the diameters of the circle x^2+y^2 - 6x + 2y =...

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  14. If two chords having lengths a^2- 1 and 3 (a + 1), where a is a consta...

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  15. The equation of the parabola having focus (3, 2) and vertex (1, 2), is...

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  16. The sum of the distances of a point (2, -3) from the foci of an ellips...

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  17. The equation of one of the tangents to x^2/3-y^2/2=1 which is parallel...

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  18. If e1 is eccentricity of the ellipse x^2/16+y^2/7=1 and e2 is eccentri...

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  19. A line passes through point (2, 2) and perpendicular to the line 3x + ...

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  20. If px^2-10xy + 12y^2+ 5x - 16y - 3 = 0 represents a pair of straight l...

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