Which of the following statements best describes what is happening to the coordinates of a linear function when itundergoes a vertical change?A)Every y value in the data set is changed by a common sum or difference.B)Every y value in the data set is changed by the same factor.C)Every x value in the data set is replaced by the corresponding y value.D)Every x value in the data set is increased or decreased by the same fixed amount.
When we add a constant number to a function it undergoes vertical change. This means that the y value of the function will be changed by that number, so the correct option is the first one, A).
