Answer:
Slope is m=0
Step-by-step explanation:
The slope of any line that is perpendicular to the y-axis is zero.
The reason is that any line that is perpendicular to the y-axis is also parallel to the x-axis and the slope of the x-axis is zero.
The equation of any line perpendicular to the y-axis is and passes through (a,b) is y=b.
The given point is (-5,-3) hence the required equation is