Answer:
x=-1 y=1/2
Step-by-step explanation:
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Student 4 has the largest percent error.
Step-by-step explanation:
The percent error of a measurement is given by

where
x is the value of the measurement
is the actual value
For student 1:

Percent error:

For student 2:

Percent error:

For student 3:

Percent error:

For student 4:

Percent error:

So, student 4 has the largest percent error.
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Answer:
22
Step-by-step explanation:
did the test with that question