Find the value of K if (−3k+1k+1,4k+2k+1) lies on x + y - 5 = 0
2
-2
If (x1,y1) lies on x + y - 5 = 0, x1−y1+5=0
Similarly,
−3k+1k+1+4k+2k+1−5=0
⇒k=−12
R divides the line segment joining P(1,2) and Q(-3, 4) in the ratio K : 1, Find the co-ordinates of R.