my teacher keeps explaining what a "vertical line test" is and how it helps solve a linear equation plz explain and dumb it down for me hahahaha thx.(Im new here btw)
The vertical line test is a visual way to determine if a curve is a graph of a function or not. A function can only have one output, y, for each unique input, x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function.
