Class X- Pair of Linear Equations in two variables Online Test

Aruna has only Re. 1 and Rs. 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is Rs. 75, then the number of Re. 1 coin and Rs. 2 coin are, respectively,


The pair of equations x + 2y +5 = 0 and -3x - 6y +1 =0 have


If a pair of linear equations is consistent, then the lines will be


The pair of equations y = 0 and y = -7 has


The pair of equations x = a and y = b graphically represents pair of lines which are


For what value of k, do the equations 3x - y + 8 = 0 and 6x - ky =-16 represent coincident lines?


If the lines given by 3x + 2ky = 2 and 2x + 5y +1 = 0 are parallel, then the value of k is,


The value of c for which pair of equations cx - y = 2 and 6x - 2y = 3 will have infinitely many solutions is


One equation of a pair of dependent lInear equations is -5X + 7Y = 2.The second equation can be


A pair of equation which has unique solution x = 2 and y = -3 is


Graphically the pair of equations

6x - 3y + 10 = 0

2x - y + 9 = 0

represents two lines which are


The pair of equations 5x-15y =8 and 3x-9y=24/5 has



















Description:

Two linear equations in the same two variables are said to form a pair of equations in two variables. The most general form of a pair of linear equations are a1x+b1y+c1=0 and a2x+b2y+c2=0, where a1,b1,c1,a2,b2,c2 are real numbers.

-A pair of linear equations is consistent if it has solution - either unique or infinitely many.

- A pair of linear equations is inconsistent, if it has no solution.

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