Which graph(s) shows a proportional relationship?
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Graph #3 shows a proportional relationship. Proportional relationships go through the origin (0,0)
Graph 3
Note the x and y placements
when x = 1, y = 5 (1 x 5 = 5)
when x = 2, y = 10 (2 x 5 = 10)
when x = 3, y = 15 (3 x 5 = 15)
etc.
Graph 4
When x = 2, y = 5 (2 x 2.5 = 5)
When x = 4, y = 10 (4 x 2.5 = 10)
etc.
hope this helps