Which statement best explains if the graph correctly represents the proportional relationship y = −2x? a coordinate plane is shown. points are graphed at 2 comma 4 and negative 1 comma 2. the points are joined by a line. no, the points shown would not be part of y = −2x no, proportions cannot be represented on a graph yes, all proportions can be shown on a graph of this line yes, the points shown on the line would be part of y = −2x