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--Answer--
A. The points lie on the graph of a vertical line.
--Explanation--
A: The image shows the locations of the 3 ordered pairs. They are on a horizontal (–––) line not a vertical ( | ) line.
B: The y intercept is 9 because the 2nd number of each of the points are a 9.
C: Each x has a y, so they represent functions.
D: There is no rise between each point, its just run, since the points are in a horizontal line. ([tex]\frac{rise}{run}[/tex])
Sorry this answer is late, but I hope it helps!