Answered

Is the graph of y = -9 a horizontal line?

(A). Yes

(B). No, the graph of y = -9 could be horizontal, vertical, or neither.

(C). No, the graph of y =
-9 is a vertical line.

(D). No, the graph of y =
-9 is a line with a positive slope.

(E). No, the graph of y = -9 is a line with a negative slope.