CBSE Class 10-Mathematics: Chapter – 3 Pair of Linear Equation in Two Variables Part 10 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 12:

Find the values of and for which the following system of linear equations has infinite number of solutions.

Answer:

If infinite number of number of solutions

Or

If

And if

On solving we get

Question 13:

Solve for where

Answer:

And

Question 14:

The cost of two kg of apples and of grapes on a day was found to be . After a month, the cost of 4 kg apples and grapes is . Represent the situation algebraically and graphically.

Answer:

Let the cost of one of apple is and one of grapes is y.

According to question,

and

Question 15

Find the value of for which the system of equation and will have no solution.

Answer:

The system has no solution.

If

If