What is the distance between the points (1, 1) and (9, 16)?
Answer and explanation
Correct answer: A. 17
- Step 1: Distance = root[(x2 - x1)^2 + (y2 - y1)^2] = root(64 + 225). Step 2. = root 289 = 17. Answer: 17. Why not the others: 23: That adds the horizontal and vertical differences instead of using Pythagoras. 289: That is the squared distance. 18: That is one more than the correct distance.
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