SOLUTION: Describe and correct the input error in the following table. The output is correct: input,x: 1, 3, 1, -3 output,y: -1, 4, 1, 5

Question 151862: Describe and correct the input error in the following table. The output is correct:
input,x: 1, 3, 1, -3
output,y: -1, 4, 1, 5
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
For any function, there should be a unique "output" for each "input".
In the provided table:
input,x: 1, 3, 1, -3
output,y: -1, 4, 1, 5
.
Notice that when x=1 there are TWO different outputs: -1 and a 1.
Therefore, since the problem states that the output is correct the first row must be incorrect.
.
To see the problem, plot the given points.
.
Instead of:
input,x: 1, 3, 1, -3
It should be:
input,x: 1, 3, -1, -3
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