Answer:
7 units
Explanation:
(see attached for reference)
given two points (x₁, y₁) and (x₂, y₂), the formula for distance between two points is given as
Distance, D = √( (x₂-x₁)² + (y₂-y₁)² )
in our case, we are given
(x₁, y₁) = (-8,5)
(x₂, y₂) = (-1,5)
simply substitute the values into the equation above:
D = √( (x₂-x₁)² + (y₂-y₁)² )
= √{ [ (-1)-(-8) ]² + (5-5)² }
= √{ [ (-1 + 8) ]² + (0)² }
= √[ (7) ² ]
= 7 units (answer)