Respuesta :

Space

Answer:

(-5, -20)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Algebra I

  • Coordinates (x, y)
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define

y = x - 15

y = 4x

Step 2: Solve for x

Substitution

  1. Substitute in y:                                                                                                4x = x - 15
  2. [Subtraction Property of Equality] Subtract x on both sides:                      3x = -15
  3. [Division Property of Equality] Divide 3 on both sides:                                x = -5

Step 3: Solve for y

  1. Define original equation:                                                                               y = 4x
  2. Substitute in x:                                                                                                y = 4(-5)
  3. Multiply:                                                                                                           y = -20

Otras preguntas