Now, let us look at the first example from the "think and discus section. We want to find the cost of 1kg of potatoes and the cost of 1 kg of tomatoes each. Let the cost of 1kg potatoes ber and cost of 1kg of tomato he . Then, the equations will become 1x+2)=30) and For the equation x+2y=30 For the equation 2x+4y=66

Here, we observe that the situation o represented graphically by two parallel lines. Smee the lines do not intersect, the equations have no common solution. This means that the cost of the potato and tomato was different on different days We see this in real lab. We cannot expect the same price of vegetables every day, it keeps channing Also, the change is independent

Such pairs of lincir equations which have no solution are known as inconsistent pairs of linear equations.
In the second example from the think and discuss section, let the cost of each bat be x and cach ball bety. Then we can write the equations 3x+6y=3900 and x+2y=1300 For the equation 3x+63900 3900-3 For the equation.x+2y=1300 1300- 3900-3100) 600 (100,600) 1300-300