What happens to a line when the y-intercept is changed? check all that apply
a. as the y-intercept increases, the graph of a line shifts up
b. as the y-intercept decreases, the graph of a line shifts down.
c. as the y-intercept increases, the graph of the line shifts right
d. as the y-intercept decreases, the graph of the line gets less steep
e. as the y-intercept decreases, the graph of the line shifts left