Question

A line passing through which of the following pairs of coordinates represents a proportional relationship?

Answer 1

What are the coordinates?

Answer 2

A. (1.25, 2.25) and (2.5, 5)
B. (2.5, 5) and (3, 5.5)
C. (1.3, 3.3) and (2.3, 4.3)
D. (1.25, 2.5) and (3.75, 7.5)
(accidently forgot to put them)

Answer 3

Try to spatially predict each of these, or find the slope. (y2-y1)/(x2-x1). If it has a Y intercept, it is not proportional. All of these seem linear. If I just give you the answer, how will you solve future problems on your own? :P