Saturday, 3 December 2011

Equations Part-2

06) The centroid of the triangle ABC is        the point (2, 3). A and B are the        points (5, 6) and (-1, 4) respectively      The coordinates of c are.      (a) (1, -2)      (b) (2, -1)       (c) (1, 2)      (d) (2, 3)

07) If X3-6x+ 11x - 6 = 0 then find the       value of (3x - 4).      (a) (1, 2 , 3)      (b) (-1, 2 , 5)      (c) (-1, 3 , 5)      (d) (2, 3 , 5)

08) A straight line of x =15 is :      (a) Parallel to y axis      (b) Parallel to x axis      (c) A diagonal line      (d) Passes through origin

09) The equation of the straight line        through the point of intersection of       x + 2y -5 = 0 and x -3y -7 = 0       and passing through the point (1, 0)       is:      (a) x + 12y = 1      (b) x - 12y = 1      (c) x - 12y = 11

10) If roots of equation x+ x + r = 0        are 'α' and 'β' and α3+ β3 = -6,        Find the value 'r' ?       (a)   -5                 3     (b)    7               3     (c)   -4               3     (d) 1

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