What are you trying to do like simplify or what i can possibly help if i know
Do you mean an extraneous solution? I will tell you what I think. To tell if a solution is extraneous you need to go back to the original problem and check if there actually is a solution or if the solution is actually right. If not then it is extraneous.
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Its the alternative C because as you can see the dots ar placed in the following coordinates(sorry for my English). The first dot is placed (1, 4) the second is placed (2, 6) the third is (3, 10) and last is (4, 12)
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were is the chart? so I can answer