exam Maths Puzzle Numerical Ability

Determine whether each ordered pair is a solution of the inequality x + y > 3. I'm just really having problems with all this. thanks.

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exam Other Question

Evaluate b2 – 2bc + c2 if b = 3 and c = –2. Is this function always increasing, decreasing, or remaining constant?

y = 0(-x + 1)

a. always increasing
b. always decresing
c. always constant
d. there is no way to know