Domain and Range of a Constant Function (Horizontal Line) | Algebra 1

A horizontal line is called a constant function: every point on it has the same y-value. For the line y = 5 that keeps going forever in both directions, the domain is all the x-values the graph covers, which is the whole x-axis: x goes from negative infinity to positive infinity, (−∞, ∞), or simply all real numbers. The range is every y-value on the graph, and that is only one number, so the range is {5}. Because it continues forever, this is an unbounded constant function. Chapters: 0:00 A horizontal line is a constant function 1:19 Domain: the x-values on the graph 3:14 Domain = all real numbers 3:54 Range: the y-values on the graph 4:36 Range = {5} #algebra1 #domainandrange #constantfunction #intercepts #math #STAAR #TSIA2 Air K Math - Math, one shot at a time #AirKMath #Algebra1 #Math