Question

A line intersects the y-axis and x-axis at the point P and Q respectively.If (2,-5)is the mid point of PQ, then find the coordinates of P and Q.

Answer 1

let P be (0,y) and Q be (x,0) 

then (x+0)/2 = 2⇒⇒⇒⇒ x = 4 
and (y+0)/2 = -5⇒⇒⇒⇒ y = -10 

P is (0,-10) 
Q is (4,0)