Question

The ordered pair (5, __ ) is the linear relation with equation y = -2x + 8. Find the missing number in the ordered pair.

Answer 1

-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

Algebra I

• Functions
• Function Notation
• Coordinates (x, y)

Explanation:

Step 1: Define

[Function] y = -2x + 8

[Coordinate] (5, __) → x = 5

Step 2: Solve for y

1. Substitute in x [Function]: y = -2(5) + 8
2. Multiply: y = -10 + 8
3. Add: y = -2