3 • (–4) • x = 0
x =
A variable is a characteristic that changes in values, denoted often by X or Y in mathematics. It can be numerical, such as weight, or categorical, like political affiliation. In contrast, a constant is a value that remains unchanged in all instances.
A variable is a characteristic or measurement that has varying values when observed in different instances. In mathematics, it is often notated by capital letters like X and Y. For example, if we consider X as the math points earned by a student at the end of a term, it can vary with each student; thus, it is a numerical variable.
Variables can be of two main types - numerical and categorical. Numerical variables have values with equal units such as weight in pounds or time in hours. While, categorical variables put the subject into different categories. For instance, if Y stands for a person's party affiliation, then some examples of Y can be Republican, Democrat, and Independent. This is a categorical variable.
On the other hand, a constant is a fixed value that does not change. In contrast to a variable, the value of a constant remains the same in all scenarios.
A variable is a characteristic or measurement that can be determined for each member of a population. It can be numerical, which takes on values with equal units like weight or time, or categorical, which places a person or thing into a category like political affiliation. For example, if we let X be the number of points earned by a math student, then X is a numerical variable. If we let Y be a person's party affiliation, then Y is a categorical variable.
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The answer is C
Hope this helps