Answer:
12 units
Step-by-step explanation:
Calculate the distance using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 3, - 8) and (x₂, y₂ ) = (9, - 8)
d = [tex]\sqrt{(9+3)^2+(-8+8)^2}[/tex]
= [tex]\sqrt{12^2+0^2}[/tex]
= [tex]\sqrt{144}[/tex] = 12
