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A man starts from the point P(-3, 4) and...

A man starts from the point `P(-3, 4)` and will reach the point `Q(0, 1)` touching the line `2x + y = 7` at R. The coordinates R on the line so that he will travel in the shortest distance is

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A DAS GUPTA-Coordinates and Straight Lines-EXERCISE
  1. The line x+ 2y=4 is-translated parallel to itself by 3 units in the se...

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  2. A ray of light coming fromthe point (1, 2) is reflected at a point A o...

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  3. A man starts from the point P(-3, 4) and will reach the point Q(0, 1) ...

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  4. A beam of light is sent along the line x-y=1 , which after refracting ...

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  5. Show that the points (-2,3), (8, 3) and (6, 7) are the vertices of a r...

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  6. The points (1, - 2), (-3,0) and (5,6) are the vertices of aright angle...

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  7. The distance of (1,2) from the line 3x-4y+15=0 measured parallel to th...

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  8. The set of lines ax + by+ c= 0, where 3a+ 2b+ 4c =0, is concurrent at ...

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  9. If a and b are real numbers between o and 1 such that the points (a,0)...

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  10. If a , ba n dc are in A P , then the straight line a x+b y+c=0 will al...

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  11. Let the algebraic sum of the perpendicular distances from the points (...

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  12. If the point (2a-3, a^2-1) is on the same side of the line x+y-4=0 as ...

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  13. The points (-a,-b), (0,0). (a,b) and (a^(2),a^(3)) are

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  14. The points (0,(8)/(3)), (1,3) and (82,30) are vertices of

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  15. 15. The distance between the lines 3x + 4y = 9 and 6x + 8y = 15 IS: (c...

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  16. The straight lines x+y=0, 3x+y-4=0 and x+3y-4=0 form a triangle which ...

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  17. Three lines px+qy+r=0, qx+ry+p=0 and rx+py+q=0 are concurrent , if

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  18. Given four lines whose equations are x +2y -3=0, 2x+3y-4=0, 3x + 4y -7...

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  19. If P(1,0), Q(-1,0) and R (2,0) are three given points, then the locus ...

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  20. If the sum of the distances of a point from two perpendicular lines in...

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