Question

For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3?

Answer 1

k = 21

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

Explanation:

Step 1: Define

Inverse Variation: xy = k

x = 7

y = 3

Step 2: Solve for k

1. Substitute: 7(3) = k
2. Multiply: 21 = k
3. Rewrite: k = 21