Which graph represents a function with direct variation?

A coordinate grid with a line passing through (0, 1) and (1, 1)

A coordinate grid with a line passing through (negative 2, 1), (0, 0) and (2, negative 1)

A coordinate grid with a line passing through (negative 3, negative 3), (0, negative 2) and (3, negative 1)

A coordinate grid with a line passing through (negative 2, negative 2), (0, 1) and (2, 4)