Can You Join 9 Points Using only 4 Lines ?

Point charges of 9 muC and -6muC are placed at a distance of 90 cm from each other. How many points can you find on line joining the charges where electric potential is zero? At what distance these these points are located from 9 muC ?

If the line joining the points (5,y) and (4,9) is parallel to the line joining the points (0,5) and (1,7) , find the value of y .

(i) Find the equation of line joining (1,2) and (3,4) using determinants, (ii) Find the equation of the line joining (3,1) and (9,3) using determinants.

If the line joining the points (6,-2) and (8,4) is perpendicular to the line joining the points (12,8) and (24,y) , find the value of y .

If the line pass through the point(-3,-5) and intersect the ellipse x^2/4+y^2/9=1 at a point A and B . Then the locus of mid point of line joining A and B is

Show that the line joining the points (4,5) and (1,2) is parallel to the line joining the points (9,-2) and (12,1) .

The length (in units ) of the line joining the points (4,3) and (-4,9) intercepted between the coordinate axes is "_______" .

The line joining the points (1,-5) and (4,-3) is parallel to the line joining the points .

Show that the line joining the points (4,-3) and (0,7) is perpendicular to the line joining the points (5,2) and (0,0) .