Mathematics · Conic Sections
If y = mx + 4 is a common tangent to both the parabolas y2 = 4x and x2 = 2by, then b is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1−32
- 2−128✓
- 3128
- 4−64
Correct answer
−128
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