Final answer:
The graph of the equation y + 4 = 0 is a horizontal line through the point (0, -4), which means the correct answer is a Horizontal line through (0, -4).
Step-by-step explanation:
The equation y + 4 = 0 is a horizontal line. To understand what this line looks like, we can rearrange the equation to y = -4. This tells us that the value of y is always -4, no matter what the value of x is. In graphing terms, this means that for every point on the line, the y-coordinate is -4.
The correct description of the graph of y + 4 = 0 is a Horizontal line through (0, -4). This is because the line crosses the y-axis at the point (0, -4), and since it is horizontal, it extends left and right from this point without going up or down.