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The length between (-1, 6) and (5, -2) can be found using the Pythagorean Theorem:
A = √((x2 - x1)^2 + (y2 - y1)^2)
In this case, (x1, y1) = (-1, 6) and (x2, y2) = (5, -2).
A = √((5 - (-1))^2 + (-2 - 6)^2)
A = √((5 + 1)^2 + (-2 - 6)^2)
A = √(6^2 + (-8)^2)
A = √(36 + 64)
A = √100
A ≈ 10
So the length between (-1, 6) and (5, -2) is approximately 10.