Mathematics · Coordinate Geometry
If the second-degree equation hxy + gx + fy = c (where h ≠ 0) represents a pair of straight lines, then which condition must be satisfied?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1gc + f2 = 0
- 2fg + ch = 0✓
- 3fh + ch = 0
- 4fc + gh = 0
Correct answer
fg + ch = 0
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