A point moves on the line . If and are fixed points, then the locus of the centroid of is a line:
- (A)with slope
- (B)parallel to -axis
- (C)with slope ✓ Correct
- (D)parallel to y-axis
Answer: (C)
Solution
Let ride along , so . The centroid of with and is ; calling it gives and . Substituting into 's line, tidies to , so the locus is a line of slope .
JEE Main · 2019 · 10 Jan 2019 · Shift 1 · Single correct option