the line joining the points (2,-1)and (5, 6)is bisected at p.if p lies 2x+4y+k=0,find the value of k
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p bisected the line joining the points(2,-1) and (5,-6).Therefore the coordinate of the mid-point p of the join of the points (2,-1) and (5,-6) is
=[{(2+5)/2 },{(-1–6)/2}]
=(7/2,-7/2)
As p (7/2,-7/2) lies on the line 2x+4y+k=0
= 2*7/2+ 4*(-7/2) +k=0
=7 -14+k=0
=k=7
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