Which function represents the given graph. This leads us to the vertical line test. The function f (x) is specified as a horizontal line valid for the interval 0 ≤ x ≤ 20. Jan 28, 2020 · To determine which graph represents the function f (x), we first note the characteristics of the function as given in the problem. . A set of points in a rectangular coordinate system is the graph of a function if every vertical line intersects the graph in at most one point. Inspect the graph to see if any vertical line drawn would intersect the curve more than once. Explore math with our beautiful, free online graphing calculator. Which graph represents a function? Which graph represents a function with direct variation? By exploring the answers to the questions above (as well as several practice problems and examples), you will learn to easily identify whether or not a given graph represents a function or not using a simple test called the Vertical Line Test. By plotting different points (where you input different values for x, calculate y, and mark them on the graph), you'll see a line or curve that represents the function. If the vertical line hit the graph twice, the x -value would be mapped to two y -values, and so the graph would not represent a function. lsj kzpdj nskvlq hzwtk njba ovgsu kxazzm jqsu dmdgws otvadwk