P ( - 4, b ) and Q ( 2, b + 2 ) are 2 points and the co-ordinates of the middle point of PQ are ( - 2, 2) . The value of b is
1
3
-2
-1
Correct Answer : A
If a ration shop is to be set up within 3 km of each city, how many ratio shops will be required?
The distance between the points (-4, 5) and (-4, -15) is
The distance between the points (-7, 5) and (-7, -20) is