Answer:
x = - 1
Step-by-step explanation:
y = 4 is the equation of a horizontal line parallel to the x- axis and passing through all points with a y- coordinate of 4
A perpendicular line is a vertical line parallel to the y- axis with equation
x = c
where c is the value of the x- coordinates the line passes through
The line passes through (- 1, 1) with an x- coordinate of - 1, thus
The equation of the perpendicular line is x = - 1
