Which graph of ordered pairs shows a proportional relationship?
A
On a coordinate plane, points (negative 1, 2) and (2, negative 1) are plotted.
B
On a coordinate plane, points (negative 2, negative 3) and (2, 3) are plotted.
C
On a coordinate plane, points (negative 2, negative 1) and (2, 3) are plotted.
D
On a coordinate plane, points (negative 1, 3) and (1, 1) are plotted.