Here, $a_1, b_1, c_1$ and $a_2, b_2, c_2$ denote the coefficients of linear equations given below. Complete the following table:

Pair of lines	$\frac{a_1}{a_2}$	$\frac{b_1}{b_2}$	$\frac{c_1}{c_2}$	Compare the ratio	Graphical representation	Algebraic interpretation
$x-y+1=0$ $-x+y+1=0$

Here, $a_1, b_1, c_1$ and $a_2, b_2, c_2$ denote the coefficients of linear equations given below. Complete the following table:

Here, $a_1, b_1, c_1$ and $a_2, b_2, c_2$ denote the coefficients of linear equations given below. Complete the following table:

If the graph of a pair of linear equations $a_{1}x+b_{1}y+c_1=0$ and $a_{2}x+b_{2}y+c_2=0$ is represented by two lines.

If the lines intersect at a point, then that point gives the solution of the two equations. In this case, the pair of equations is_____

$\frac{a_1}{a_2}=$_____

If the graph of a pair of linear equations $a_{1}x+b_{1}y+c_1=0$ and $a_{2}x+b_{2}y+c_2=0$ is represented by two lines, then fill the following blanks:

If the lines coincide, then there are _____ solutions. Each point on the line being a solution. In this case, the pair of equation is _____

$\frac{}{}=\frac{b_1}{}=\frac{}{c_2}$

If the graph of a pair of linear equations $a_{1}x+b_{1}y+c_1=0$ and $a_{2}x+b_{2}y+c_2=0$ is represented by two lines, then fill the following blanks:

If the lines are parallel, then the pair of equations has _____ solution. In the case, the pair of equations is _____

If the area of the shaded region is $k \mathrm{sq}. \mathrm{units}$, then find the value of $k$.

The area of $△ABD$ is $k$ square unit. Find $k$.

The area of $△ABC$ is $k$ square unit. Find $k$.