The 1st set has 5 different values of +y+
for +x+=+1+ and violates definition
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The 2nd set is a function
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The 3rd set has
( 1,2 ) & ( 1,1 )
( 2,3 ) & ( 2,2 )
( 3,4 ) & ( 3,3 )
Each of these pairs violates the definition
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The 4th set has ( 2,-7 ) & ( 2,0 ) which
violate definition
The answer is B. And I am not that sure about my answer, but it has to be the correct answer for what you put. THANK YOU!!!!
That polynomial is made up of 2 terms,

and 7y, separated by a minus sign. To find the degree of a polynomial you consider the term with the highest degree, no matter that the variables are different. The degree on the first term is 5+2=7, whereas the degree on the second term is just 1. Since the degree of a polynomial is equal to the degree of the term that is highest, our degree is 7.
Answer:2
Step-by-step explanation: