MARKS – 25                                                    TOPIC- PAIR OF LINER EQUATIONS IN TWO VARIABLES                             TIME – 45 MINS

 

QUE 1)  The solution of the linear equation ax+b=0   is  ______________________________                                                      (1)

 

QUE 2) The graph of the line ax = 0 is ___________________________                                                                                            (1)

 

QUE 3) The graph of the line x = constant is parallel to ______________________________                                                        (1)

 

QUE 4) If the lines are intersecting, the equations are ______________________ and has _____________________                   (2)

 

QUE 5) The coach of a cricket team buys 3 bats and 6 balls for ₹3900. Later she buys another bat and 2 more balls of same kind for ₹1300. Represent the situation algebraically.                (2)

 

QUE 6) Find the area of triangle formed by the lines x+y = 2  ,  x-axis and y axis.     (3)

 

QUE 7) Draw  the graphs of equations x= 5, y = −4 ,  Also find area of rectangle so formed by them with x- axis and y- axis.       (4)

 

QUE 8) Solve for x , by substitution method.     

            x+1 / 2    +   y-1 / 3  =  8      (I)             x-1 / 3     +  y+1 / 2  =  9       (II)                                                                    (3)

 

QUE 9) The larger of the two supplementary angles exceeds smaller by 18 degree.  Find them.      (3)

 

QUE 10)  Solve the system of linear equations by elimination method .

                3x  – √ 2y  =  √3        (I)

                5x  +  √3y  =  √ 2      (II)                                            (3)

 

QUE 11)  Find/ Solve for x and y .

ax/b –  by/a  =  a+b  ;     ax-by = 2ab                  (2)