Answer:
The first relation is a function.
Step-by-step explanation:
The second relation can't be a function because it has more than one x value for one y value. The third relation can't be a function either because the graph shows that for 1 on the x axis, there are 2 y values, which means that it isn't a function. The first relation has one x value for every y value, so it is a function. Hope this helps!
