Ncert- class10-Maths – Pair of Linear Equation in two variables Welcome to your Ncert- class10-Maths - Pair of Linear Equation in two variables 1. If 3x +4y : x +2y =9 :4 then 3x+5y:3x-y is equal to 4 : 1 1 : 4 7 : 1 1 : 7 None 2. 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 3. The pair of linear equations 2kx +5y = 7, 6x-5y =11 has a unique solution, if k≠-2/3 k≠2/9 k≠-3 k≠5 None 4. The pair of equations x+2y+5=0 and -3x-6y+1=0 has infinitely many solutions no solution a unique solution exactly two solutions None 5. 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 36 84 63 None 6. The pair of equations x = a and y =b graphically represents lines which are coincident parallel intersecting at (b, a) intersecting at (a, b) None 7. If a pair of linear equations is consistent, then the lines will be always intersecting always coincident intersecting or coincident parallel None 8. 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 9. 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 all real values except 10 1/2 5/2 None 10. The pair of equations 3^x+y =81^x-y =3 has no solution unique solution infinitely many solutions x=2(1/8), y =1(7/8) None 11. For what value of k, do the equations 3x -y+8=0 and 6x-ky=-16 represent coincident lines ? 1/2 2 -1/2 -2 None 12. The value of k for which the system of equations x+y-4=0 and xky 2x+ky=3 , has no solution, is 3 ≠2 2 -2 None 13. One equation of a pair of dependent linear equations -5x +7y=2 The second equation can be -10x-14y+4=0 -10x+14y+4=0 10x-14y=-4 10x+14y+4=0 None 14. 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 11 13 12 None 15. 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 36 None of these 45 54 None 16. 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 3 and 5 3 and 1 -1 and -3 5 and 3 None 17. The value of k for which the system of linear equations x+2y =3, 5x+ky+7=0 is inconsistent is -14/3 2/5 5 10 None 18. The pair of equations y =0 and y =-7 has one solution two solutions no solution infinitely many solutions None 19. 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 15 and 35 35 and 20 35 and 15 25 and 25 None 20. The value of c for which the pair of equations cx-y =2 and 6x-2y =3 will have -12 3 -3 no value 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.
