If the equation `hxy + gx + fy + c = 0` represents a pair of straight lines, then

If the equation hxy+gx+fy+c=0(h!=0) , represents a pair of straight lines, then

Select and write the correct answer from the alternatives in each of the following : If an equation hxy + gx + fy + c = 0 represents a pair of lines, then ……

If the equation 2hxy + 2gx + 2fy + c = 0 represents two straight lines, show that they form a rectangle of area (|fg|)/(h^2) with the co-ordinate axes.

IF the equation x^(2) + y^(2) + 2gx + 2fy + 1 = 0 represents a pair of lines, then

If the equation 2hxy+2gx+2fy+c=0 represents two straight lines, then show that they form a rectangle of area (|fg|)/(h^2) with the coordinate axes.

If the equation 2hxy+2gx+2fy+c=0 represents two straight lines, then show that they form a rectangle of area (|fg|)/(h^2) with the coordinate axes.

If the equation 2hxy+2gx+2fy+c=0 represents two straight lines, then show that they form a rectangle of area (|fg|)/(h^2) with the coordinate axes.