A mapping diagram illustrates how each element in the input is paired with an element in the output. An ordered pair is a set of numbers written in the form (x,y), where x is a number from the input and y is a number from the output.
Looking at where the arrows start and end, we can see the x-coordinates and their corresponding y-coordinates. We get the ordered pairs by pairing these values.
( 0, 12), ( 2, 10), ( 4, 8), ( 6, 6)
