Respuesta :

Space

Answer:

[tex](4, -3 )[/tex]

General Formulas and Concepts:

Pre-Algebra I

  • Order of Operations: BPEMDAS

Algebra I

  • Midpoint Formula: [tex](\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2} )[/tex]

Step-by-step explanation:

Step 1: Define

R (9, 3)

S (-1, -9)

Step 2: Find midpoint

  1. Substitute:                    [tex](\frac{9-1}{2}, \frac{3-9}{2} )[/tex]
  2. Subtract:                       [tex](\frac{8}{2}, \frac{-6}{2} )[/tex]
  3. Divide:                          [tex](4, -3 )[/tex]