Which linear relationship can be described as a function with direct variation?
A coordinate plane with a line passing through (negative 2, 3), (0, 1) and (1, 0).
A coordinate plane with a line passing through (negative 2, negative 2), (0, 0) and (2, 2).
A coordinate plane with a line passing through (negative 2, negative 1), (0, negative 1) and (2, negative 1).
A coordinate plane with a line passing through (1, 1), (1, negative 1) and (1, negative 4).
