What is the distance between the points (2, -1) and (10, 5)?
Answer and explanation
Correct answer: D. 10
- Step 1: Distance = root[(x2 - x1)^2 + (y2 - y1)^2] = root(64 + 36). Step 2. = root 100 = 10. Answer: 10. Why not the others: 14: That adds the horizontal and vertical differences instead of using Pythagoras. 100: That is the squared distance. 11: That is one more than the correct distance.
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