Which function is represented by the graph? y=x y=3x y=3x−1 y=x+3

Question

Which function is represented by the graph?

1. y=x
2. y=3x
3. y=3x−1
4. y=x+3

Answer 1

The point (1,2) lies on the graph of the function. This means that the only possible choice is the function y=3x-1.