Answer:
it's not an up and down line, the graph is a group dots (4 ones) that they are located on a vertical line
Answer: Vertical line x = 1
Explanation:
(1, 1) (1, 2) (1, 3) (1, 4)
Notice that the x-value for each coordinate is 1.
The line is a vertical line (up & down) through x = 1
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