Question

Calculate the distance between the points K = (1, -1) and P=(9.-6) in the coordinate plane.

Give an exact answer (not a decimal approximation)

Answer 1

√89

Explanation:

√(x2 - x1)² + (y2 - y1)²

√(9 - 1)² + [-6 - (-1)]²

√(8)² + (-5)²

√64 + 25

√89