Which statement best explains whethGianni wenThe following points represent a relation where x represents the independent variable and y represents the dependent variable. three fourths comma negative 2, 1 comma 5, negative 2 comma negative 7, three fourths comma negative one half, and 6 comma 6 Does the relation represent a function? Explain. Yes, because for each output there is exactly one input Yes, because for each input there is exactly one output No, because for each output there is not exactly one input No, because for each input there is not exactly one outputt backpacking at Bamboo Mountain. Along his trip, he recorded his altitude above sea level over the number of days he had been backpacking. Gianni created a graph to show this relationship. first quadrant of coordinate plane titled Gianni's backpacking trip with the x axis labeled time in days and the y axis labeled altitude in feet above sea level, with a line segment from 0 comma 0 to 1 comma 400, a line segment from 1 comma 400 to 2 comma 400, a line segment from 2 comma 400 to 4 comma 800, a line segment from 4 comma 800 to 5 comma 800, a