Respuesta :

CAEDALPE

y=4x-9

y=x-3

-4x + y = -9

-x +y = -3              //-1

-4x + y = -9

x - y = 3

---------------------

-3x = -6

x = 2

y = 2-3

y = -1

Space

Answer:

(2, -1)

General Formulas and Concepts:

Pre-Algebra

  • Order of Operations: BPEMDAS
  • Equality Properties

Algebra I

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

y = 4x - 9

y = x - 3

Step 2: Solve for x

  1. Substitute in y:                              4x - 9 = x - 3
  2. Subtract x on both sides:             3x - 9 = -3
  3. Add 9 to both sides:                     3x = 6
  4. Divide 3 on both sides:                x = 2

Step 3: Solve for y

  1. Define:                              y = x - 3
  2. Substitute in x:                 y = 2 - 3
  3. Subtract:                           y = -1

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