if there in 2 or more x's per 1 y
Chat with our AI personalities
Test it by the vertical line test. That is, if a vertical line passes through the two points of the graph, this graph is not the graph of a function.
When a function is multiplied by -1 its graph is reflected in the x-axis.
A vertical line test can be used to determine whether a graph is a function or not. If a vertical line intersects the graph more than once, then the graph is not a function.
A linear function.
Absolute Value function