Class 10MathematicsPair of Linear Equations in Two VariablesMix Examples - Pair of Linear Equations in Two Variables
MediumFor a pair of equations $2x + 3y = 1$ and $3x - 2y = 8$,in usual notations $a_{1}b_{2} - a_{2}b_{1} = \dots$
- A$5$
- B$-5$
- C$-13$
- D$8$
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Similar Questions
Solve the following pair of linear equations by the elimination method and the substitution method:
$3x + 4y = 10$ and $2x - 2y = 2$
$3x + 4y = 10$ and $2x - 2y = 2$
Medium
View SolutionAre the following pair of linear equations consistent? Justify your answer.
$2ax + by = a$
$4ax + 2by - 2a = 0$; $a, b \neq 0$
$2ax + by = a$
$4ax + 2by - 2a = 0$; $a, b \neq 0$
Medium
View SolutionDo the following pair of linear equations have no solution? Justify your answer.
$y + 6x = 6$ and $y = 2x$
$y + 6x = 6$ and $y = 2x$
Medium
View Solution$x=-1$ and $y=-2$ is one of the solutions of the equation $\ldots \ldots \ldots \ldots$
Easy
View SolutionIf the following pair of equations is consistent (unique solution),then find the value of $k$:
$x - ky = 2$
$3x + 2y = -5$
$x - ky = 2$
$3x + 2y = -5$
Medium
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