Determine if the Relation is a Function (4,-5) , (4,0) , (4,3) , (4,4)

$(4, - 5)$ , $(4, 0)$ , $(4, 3)$ , $(4, 4)$

Step 1

Since $x = 4$ produces $y = 3$ and $y = 4$ , the relation $(4, - 5), (4, 0), (4, 3), (4, 4)$ is not a function.