Chapter 9 Quadratic Relations and Conic Sections - 9.1 Apply the Distance and Midpoint Formulas - 9.1 Exercises - Skill Practice - Page 617: 15

$$\left(1.2,\:2\right)$$

Using the distance formula, we find: $$\sqrt{\left(6.2-\left(-3.8\right)\right)^2+\left(-11-15\right)^2}\\ 27.86$$ Using the midpoint formula, we find: $$\left(\frac{6.2-3.8}{2},\:\frac{-11+15}{2}\right)\\ \left(1.2,\:2\right)$$