Question

Is the relation a function? If so why or why not?

(-3,2)

(-1,0)

(1,0)

(5,-2)

Answer 1

$\bf \begin{array}{|cc|ll} \cline{1-2} x&y\\ \cline{1-2} -3&2\\ -1&0\\ 1&0\\ 5&-2\\ \cline{1-2} \end{array}\impliedby \begin{array}{llll} no~rep\textit{eated x-values}\\ function~~\checkmark \end{array}$

Answer 2

Yes, because you only get one output (x) for each output (y)