What is the distance between the points (0, 6) and (-9, 18)?
- A. 21
- B. 15 ✓
- C. 13
- D. 17
Correct answer
B. 15
Explanation
Using the distance formula: √[(-9-0)² + (18-6)²] = √[-9² + 12²] = √225 = 15.
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