Answer
in more than one point;
function
Work Step by Step
RECALL:
Vertical Line Test:
(i) If all vertical lines pass through at most one point on the graph, then the graph represents $y$ as a function of $x$.
(ii) If at least one vertical line passes through more than one point on the graph, then the graph does not represent $y$ as a function of $x$.
Thus, the missing expressions in the given statement are:
in more than one point;
function
