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MCQs for Pair of Linear Equations in Two Variables
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MCQs for Pair of Linear Equations in Two Variables
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21 Questions

1. If a pair of linear equations is consistent, then the lines will be
2. The graph of the equation 2x + 3y = 5 is a
3. The value of k, for which the system of equations x + (k + l)y = 5 and (k + l)x + 9y = 8k – 1 has infinitely many solutions is
4. The pair of equations 3x – 5y = 7 and – 6x + 10y = 7 have
5. If am bl then the system of equations ax + by = c, lx + my = n, has
6. Graphically, the pair of equations 7x – y = 5; 21x – 3y = 10 represents two lines which are
7. The father's age is six times his son's age. Four years hence, the age of the father will be four times his son's age. The present ages of the son and the father are, respectively
8. The graph of x = -2 is a line parallel to the
9. The pair of equation x = – 4 and y = – 5 graphically represents lines which are
10. Two equations in two variables taken together are called
11. The graph of y = 5 is a line parallel to the
12. The sum of the digits of a two-digit number is 9. If 27 is added to it, the digits of the number get reversed. The number is
13. The pair of equations x = a and y = b graphically represents lines which are
14. Asha has only ₹1 and ₹2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is ₹75, then the number of ₹1 and ₹2 coins are, respectively
15. The value of k, for which equations 3x + 5y = 0 and kx + lOy = 0 has a non-zero solution is
16. One equation of a pair of dependent linear equations is 2x + 5y = 3. The second equation will be
17. The value of k for which the equations (3k + l)x + 3y = 2; (k2 + l)x + (k – 2)y = 5 has no solution, then k is equal to
18. If x = a, y = b is the solution of the equations x + y = 5 and 2x – 3y = 4, then the values of a and b are respectively
19. The pair of equations x = 0 and x = 5 has
20. If in the equation x + 2y = 10, the value of y is 6, then the value of x will be
21. The graph of y = 4x is a line