Question

7/22
is this relation a function? if so, is it linear?
not a function
linear function
function, but not linear

Explanation:

To determine if the relation is a function, use the vertical line test: any vertical line drawn on the graph intersects the curve at most once. This graph fails the test, as a vertical line (e.g., $x=2$) crosses the curve at two points. A function cannot have one input mapping to multiple outputs, so this is not a function.

Answer:

Not a function