`4x + 6y =18` doesn't pass through origin. It indicates a …………

HIV doesn't spread through

A chord of the circle x^2 + y^2 - 4x - 6y = 0 passing through the origin subtends an angle arctan(7/4) at the point where the circle meets positive y-axis. Equation of the chord is

A circle passing through the intersection of the circles x ^(2) + y^(2) + 5x + 4=0 and x ^(2) + y ^(2) + 5y -4 =0 also passes through the origin. The centre of the circle is

A parallelogram is formed by the lines ax^(2)+2hxy+by^(2)=0 and the lines through (p,q) parallel to them.Show that the equation of the diagonal of the parallelogram which doesn't pass through origin is (2x-p)(ap+hq)+(2y-q)(hp+bq)=0

The graph of 5x-4y=0 passes through the origin.

The combine equation of the lines passing through the origin and perpendicular to the lines x+2y=19 and 3x+y=18 is

A chord of the circle x^(2)+y^(2)-4x-6y=0 passing through the origin subtends an angle arctan(7/4) at the point where the circle meets positive y-axis.Equation of the chord is

The diameter of the circle concentric to the circle x^(2) + y^(2) + 4x - 2y = 20 and passes through the origin is -