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 right.
b. as the y-intercept decreases, the graph of the line gets less steep.
c. as the y-intercept increases, the graph of the line shifts up.
d. as the yintercept decreases, the graph of the line shifts down.
e. as the y-intercept decreases, the graph of the line shifts left.

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

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

Explanation:

There are two ways to think about this problem. The first way would be the graphical approach:

Now, thinking algebraically, a line has the following equation in a general form:

The y-intercept is essentially obtained when x = 0, then:

y = b:

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