This week in math we worked on Relations and Functions. A function is where each input value only relates to one output value.
To find out whether or not something is a function, in ordered pairs you look to see if a domain number is repeated. If its repeated, then it’s not a function. In a graph you can use the vertical line test, if a vertical line in drawn on a graph and it hits more than one point then it’s not a function.
(2,3) (4,5) (7,4) (8,4) is a function
(2,3) (4,5) (2,4) (8,7) is not a function