If the straight line, is perpendicular to the line passing through the points and , then equals:
- (A)
- (B)-5
- (C)
- (D)5✓ Correct
Answer: (D)
Solution
The given line has slope , so any line perpendicular to it has slope . The line through and must carry this slope, so . Then , giving .
JEE Main · 2019 · 12 Jan 2019 · Shift 1 · Single correct option