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

two options apply: A and D.

A. As the y-intercept increases, the graph of the line shifts up.

D. As the y-intercept decreases, the graph of the line shifts down.


Justification:

1) Take the slope-intercept equation of the line: y = f(x) = mx + b

2) The y-intercept is b


3) When b is increased, f(x) will increases too, that is f(x) will be higher or its graph will be shifted up, which is what the option A. states.


4) When b is decreased, f(x) will decreases too, that is f(x) will be lower or its graph will be shifted dOwn, which is what the option D states.


5) Regarding the options B and E, which deal with motions in the horizontal direction (left or righT), nothing can be said, as the effect of a change in the y -intercept on the horizontal direction will depend on the slope.


6) Regarding the option C, a change in the y-intercept does not change the slope (the steep of the line).

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The answer is b 12-4m