CBSE Class 10-Mathematics: Chapter –3 Pair of Linear Equation in Two Variables Part 10
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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
X | |||
Y |
X | |||
Y |

Represent the Situation Algebraically and Graphically
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