Question

Y = 2x – 4 y = -x + 5

Answer 1

Answer:

(3, 2)

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

Algebra I

• Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 2x - 4

y = -x + 5

Step 2: Solve for x

Substitution

1. Substitute in y:                    2x - 4 = -x + 5
2. Add x to both sides:           3x - 4 = 5
3. Add 4 to both sides:           3x = 9
4. Isolate x:                              x = 3

Step 3: Solve for y

1. Define equation:                    y = -x + 5
2. Substitute in x:                       y = -3 + 5
3. Add:                                        y = 2