Question: in the graph below, we are testing to see if the vertical line test passes at x= -1. when we draw a vertical line at
in the graph below, we are testing to see if the vertical line test passes at x= -1. when we draw a vertical line at x=-1, it appears as if the vertical line intersects the graph at two points (-1,2) and (-1,-1). But the vertical line actually only intersects the graph at one of these points
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