Answer:A) y = 4
Step-by-step explanation:
The slope of any horizontal line is zero, 0 .The equation of any horizontal line is of the form = b, where b is the y-coordinate of the y-intercept .
Among all the options given The equation y=4 represent a horizontal line .
The equations y=x-0 ,y=x+0 represent the same line y=x and are not horizontal lines. x=4 is a vertical line.
Option A y=4 represent a horizontal line.
