Answer: This is a function.
Explanation:
Function: is an expression that illustrates the relationship between the independent variable (x) and the dependent variable (y)
- a key characteristic of a function is that for every input value (x) there will only be one corresponding output value (y)
In this case you can look at multiple points on thus graph at at no point does this graph have an x-value correspond with more than 1 y-value