![Picture](/uploads/2/3/6/2/23627532/1868882.png?335)
Graphs are made up of ordered pairs (x,y) that may or may not form a line or curve. The horizontal axis is the x values and the vertical axis is the y values.
In order to tell if a graph is a function or not, use the vertical line test. The Vertical Line Test, or VLT, is a method to tell whether a graph is a function or not. The vertical line ( a pencil or something else) can only touch one point at a time.
-f(x) = 1 when y=1 (horizontal line)
Relations: a set of x coordinates relating to a set of y coordinates ; ordered pairs
*they do not always have to be functions
In order to tell if a graph is a function or not, use the vertical line test. The Vertical Line Test, or VLT, is a method to tell whether a graph is a function or not. The vertical line ( a pencil or something else) can only touch one point at a time.
-f(x) = 1 when y=1 (horizontal line)
Relations: a set of x coordinates relating to a set of y coordinates ; ordered pairs
*they do not always have to be functions