Answer:
10 units
Explanation:
d = √(x₂ - x₁)² + (y₂ - y₁)²
Given the coordinates of points A and B as A (1, 1) and B (7, -7), we can substitute these values into the formula:
d = √((7 - 1)² + (-7 - 1)²)
= √(6² + (-8)²)
= √(36 + 64)
= √100
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