Answer:
x= 12
Step-by-step explanation:
Slope-intercept form
y= mx +c, where m is the gradient and c is the y-intercept.
y= -1
y= 0x -1
The given line, y= -1, is a horizontal line as it has a gradient of zero.
A line perpendicular to a horizontal line is a vertical line, and its equation is written as x= ___.
Since the vertical line passes through the point (12, -39), its equation is x= 12.
