7 Roni wants to write an equation to represent a proportional relationship that has a constant of proportionality equal to 25 7 She writes the equation Y = X+ 25 What error is Roni making? 7 She should have written V=-X+ 25 so that x and y have a constant sum. 7 O She should have written XY = 25 so that x and y have a constant product. 7 X O She should have written Y = 25 so that x and y have a constant quotient. 7 She should have written Y = 25 so that y has a constant value.​