Question

Given f(x) = (-1)(x) + 2, f(4) is equal to:
Hint: Replace the x in the function with 4.

Answer 1

f(4) = -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

Explanation:

Step 1: Define

f(x) = (-1)(x) + 2

f(4) is x = 4 for function f(x)

Step 2: Evaluate

1. Substitute in x [Function]: f(4) = (-1)(4) + 2
2. Multiply: f(4) = -4 + 2
3. Add: f(4) = -2