Let the number be x.
-(3/4)*x = -(7/8)
x = -(7/8)/-(3/4)
x = 7/8 * 4/3
x = 7/6
The number = 7/6
Perpendicular lines have the negative reciprocal slope, so the slope of your new line will be -1/4 and the current equation will be as follows:
y = -1/4x + b
(where b is the y intercept)
to find b, plug in point A and you'll get:
2 = -1/4(16) + b
2 = -4 + b
6 = b
the equation will be:
y = -1/4x + 6
(61+36)460+5000M= 49620
(M equals operation cost per month)
Now
Loss:-



Again



Third farmer will pay 59500