In order for a line to be perpendicular to another, the product between the slopes needs to be equal to -1.
since the line x=8 is a vertical line and does not have a slope multiplying a variable, the perpendicular line needs to be a horizontal line.
the general equation for a horizontal line:

if it needs to pass through the point (-5,7), the y-coordinate will determine the equation

Answer:
(53 + 12) / 77 = 0.84
65/77 = 0.84
0.84 = 0.84 (correct)
so u would have to add 12
Formula for area of a rectangle is: A = l x w
A: Area
l: length
w: width
length of football field is 100 yards and width is 53.3 yards.
To find the area we need to multiply the length by width.
Area of football field = 100 x 53.3 = 5330 square yards (yards^2)