Answer:u = - 2
Step-by-step explanation:
Slope = change in value of y on the vertical axis / change in value of x on the horizontal axis
change in the value of y = y2 - y1
Change in value of x = x2 -x1
y2 = final value of y
y 1 = initial value of y
x2 = final value of x
x1 = initial value of x
From the information given,
Slope = - 8
y2 = 6
y1 = u
x2 = 6
x1 = 7
Therefore,
- 8 = (6 - u)/(6 - 7)
- 8 = (6 - u)/ - 1
6 - u = 8
u = 6 - 8 = - 2
