Does this set of ordered pairs represent a function why or why not? (-2,2), (-1,2), (3,-1), (3,1), (4-11)

Simplify the expression 10/11(22z) + (a+5) -1

X+ y = 5 ; x - y =3 solve using linear combination

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.