Ncert- class10-Maths – Pair of Linear Equation in two variables Welcome to your Ncert- class10-Maths - Pair of Linear Equation in two variables 1. The value of k for which the system of linear equations x+2y =3, 5x+ky+7=0 is inconsistent is 2/5 5 -14/3 10 None 2. If 3x +4y : x +2y =9 :4 then 3x+5y:3x-y is equal to 7 : 1 4 : 1 1 : 4 1 : 7 None 3. If a pair of linear equations is consistent, then the lines will be intersecting or coincident always intersecting parallel always coincident None 4. x and y are 2 different digits. If the sum of the two digit numbers formed by using both the digits is a perfect square, then value of x+y is 10 12 11 13 None 5. The pair of equations 3^x+y =81^x-y =3 has infinitely many solutions x=2(1/8), y =1(7/8) no solution unique solution None 6. The pair of equations y =0 and y =-7 has two solutions infinitely many solutions one solution no solution None 7. If x= a and y =b is the solution of the equations x-y =2 and x+y =4 , then the values of a and b are, respectively 5 and 3 -1 and -3 3 and 1 3 and 5 None 8. The value of k for which the system of equations x+y-4=0 and xky 2x+ky=3 , has no solution, is ≠2 3 -2 2 None 9. Aruna 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 35 and 20 25 and 25 15 and 35 35 and 15 None 10. For what value of k, do the equations 3x -y+8=0 and 6x-ky=-16 represent coincident lines ? 2 1/2 -2 -1/2 None 11. The 2 digit number which becomes 5/6 th of itself when its digits are reversed. The difference in the digits of the number being 1, then the two digits number is 54 45 36 None of these None 12. The pair of equations x = a and y =b graphically represents lines which are intersecting at (b, a) parallel intersecting at (a, b) coincident None 13. A fraction becomes 4 when 1 is added to both the numerator and denominator and it becomes 7 when 1 is subtracted from both the numerator and denominator. The numerator of the given fraction 5 15 2 3 None 14. If the lines given by 3x+2ky =2 and 2x +5y+1 =0are parallel, then the value of k is 15/4 -5/2 2/5 3/2 None 15. The pair of equations x+2y+5=0 and -3x-6y+1=0 has a unique solution no solution infinitely many solutions exactly two solutions None 16. The pair of linear equations 2kx +5y = 7, 6x-5y =11 has a unique solution, if k≠-3 k≠5 k≠2/9 k≠-2/3 None 17. For which value(s) of p, will the lines represented by the following pair of linear equations be parallel 3x-y-5=06x-2y-p=0 10 5/2 all real values except 10 1/2 None 18. One equation of a pair of dependent linear equations -5x +7y=2 The second equation can be 10x-14y=-4 -10x-14y+4=0 10x+14y+4=0 -10x+14y+4=0 None 19. In a number of two digits, unit’s digit is twice the tens digit. If 36 be added to the number, the digits are reversed. The number is 48 84 36 63 None 20. The value of c for which the pair of equations cx-y =2 and 6x-2y =3 will have 3 no value -3 -12 None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
