Question 1. Which of the following pairs of linear equations has unique solution, no solution, or infinitely many solutions In case there is a unique solution, find it by using cross multiplication method. (i)x – 3y – 3 = 0 ; 3x – 9y – 2 =0 (ii)2x + y = 5 ; 3x +2y =8 (iii)3x – 5y = 20 ; 6x – 10y =40 (iv)x – 3y – 7 = 0 ;3x – 3y – 15= 0 | |

Quesiton 4. Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method : (i) A part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the mess.When a student Atakes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B, who takes food for 26 days, paysRs 1180 as hostel charges. Find the fixed charges and the cost of food per day. (ii) Afracti | |