GED Math Practice Test

Which of the following best describes a coefficient?

1. A symbol like x or y used in expressions

2. A number being multiplied to a variable

3. A comparison of two numbers

4. The initial point of an angle

The correct answer is: A number being multiplied to a variable

The definition of a coefficient is best captured by the notion of a number that is being multiplied by a variable in an algebraic expression. For instance, in the expression 5x, the number 5 is the coefficient that indicates how many times the variable x is being counted. This understanding is fundamental in algebra, as coefficients play a crucial role in determining the magnitude and direction of the variable they are associated with. In expressions, identifying coefficients allows one to manipulate equations and understand the relationships between different terms. Recognizing this concept is critical when solving equations, factoring polynomials, or working with functions, as it directly impacts the calculations and outcomes of these mathematical operations. Therefore, understanding what a coefficient is provides a solid foundation for further studies in algebra and mathematics as a whole.