Answer
By placing a horizontal line anywhere on the graph, the line must only intersect the graph once to be a one-to-one function. In this case, a horizontal line placed anywhere on this graph will intersect the function twice, and the function would not be considered a one-to-one function.
Work Step by Step
By placing a horizontal line anywhere on the graph, the line must only intersect the graph once to be a one-to-one function. In this case, a horizontal line placed anywhere on this graph will intersect the function twice, and the function would not be considered a one-to-one function.