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# What Is the Domain of a Function?

**The domain of a function is all of the x values of the function without any repetition.** A vertical line has only one x value as its domain, while a horizontal line has a domain of all x values.

In a linear function, the range is all values of x. However, certain functions are undefined for some values of X. In those functions, the range is all values of x except those that make the function undefined. For example, where y equals a radical function of x, the range is all values of x that make the equation under the radical positive. Another example is where y equals a fraction where x is in the denominator. In that case, the range is all values of x that yield a nonzero denominator.

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## What Is a Real Life Situation That Can Represent a Domain or Range Function?

A: In mathematics, a function's domain is all the possible inputs that the function can accept without breaking and the range is all the possible outputs. A r... Full Answer >Filed Under: -
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## What Is the Difference Between a Function and a Relation?

A: A relation is a set of numbers that have a relationship through the use of a domain and a range, while a function is a relation that has a specific set of ... Full Answer >Filed Under: -
Q:
## What Is a Dependent Variable?

A: In math, a dependent variable is one in an expression, equation or function that depends upon one or more other variables' values to determine its value. T... Full Answer >Filed Under: -
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## What Is the Midpoint Method?

A: The midpoint method is a means of approximating the integration of a function over a span of values. It is employed in calculus and is a more accurate way ... Full Answer >Filed Under: