21.9 units
To find the distance between two points, we can use the distance formula:
d = √[(x₂ - x₁)² + (y₂ - y₁)²]
where (x₁, y₁) and (x₂, y₂) are the coordinates of the two points.
Using the given points, we can substitute in the values and simplify:
d = √[(-6 - 9)² + (-6 - 10)²]
= √[(-15)² + (-16)²]
= √(225 + 256)
= √481
≈ 21.9