Q. Look at this set of ordered pairs:(9,13)(−8,1)(9,1)(−8,19)Is this relation a function?Choices:(A)yes(B)no
List x-values: List all the x-values from the ordered pairs.x-values: 9, –8, 9, –8
Check for repetition: Check if any x-value is repeated.x-values 9 and –8 are repeated.
Check for different y-values: Since x-values are repeated, check if they correspond to different y-values.For x=9, y-values are 13 and 1.For x=–8, y-values are 1 and x0.
Determine if function: Determine if the relation is a function.A relation is not a function if a single x-value maps to multiple y-values.Since x=9 maps to two different y-values, the relation is not a function.