Answer:
1. Second Choice
2. Positive
3. Line B
4. Line D
5. Horizontal
Explanation:
First Screenshot
The y-intercept is the value of b —
where m = slope and b = y-intercept.
Looking from the graph, the graph passes y-axis at (0,1) which is y-intercept.
Basically (0,a) is y-intercept.
Thus, our y-intercept is (0,1)
Second Screenshot
The slope is positive. If the slope is negative, it would face opposite.
For zero slope, the graph will become a horizontal line.
An undefined slope is the vertical line graph.
Third Screenshot
Line B has zero slope. As said, the zero slope will turn the graph into a horizontal line.
Fourth Screenshot
Line D has an undefined slope. Read Third Screenshot.
As said, an undefined slope is the vertical line.
Fifth Screenshot
This is called Constant Function where the graph is a horizontal line. For a vertical line, it must be x = a (where a is constant)
FYI,
y = a — horizontal
x = a — vertical