Question

Representation of Real life situation : 5 pencils and 7 pens together cost Rs. 50 whereas 7 pencils and 5 pens together cost Rs. 46 . a) Represent the above situation in linear equation in two variables taking cost of one pencil as Rs. x and cost of one pen as Rs. y. i)5x+7y=46 and 7x+5y=50 ii)5x+7y=50 and 7x+5y=46 ii)5x+5y=46 and 7x+7y=50 iv)5x+5y=50 and 7x+7y=46 b) The above two equations if plotted on graph they will be i) Parallel lines ii) Coincident lines iii) Intersecting lines iv) None of these c) The cost of one pencil and one pen will be i) 3 , 5 ii) 5 , 3 iii) 7 , 3 iv) 3 , 7d) If the two lines are intersecting then a1/a2 is





i) =b1/b2





ii) =c1/c2





iii) =c1/c2





iv) =b1/b2





e) The solution of the pair of linear equations are

i)x=5,y=9ii) x=9,y=5iii)x=6,y=8iv) x=10,y=4​

Answer 1

it is shown in the graph that two lines are intersect each other

so x-3

y-5