Answer:
The value of point B is not given, so i will answer in a general way.
A general line equation is written as:
y = a*x +b
Where a is the slope of the line and b is the y-intercept.
In this case, we know that the slope is equal to -(5/2)
Then our line is something like:
y = -(5/2)*x + b
Now we know that this line passes through the point B (but we do not know the coordinates of this point)
Then I will assume that the point B is (xₙ, yₙ)
If this line passes through that point, this means that when we evaluate our line in x = xₙ, then y = yₙ
If we replace these values in the line equation we get:
yₙ = (-5/2)*xₙ + b
then:
b = yₙ + (5/2)*xₙ
So knowing the coordinates of point B, we could find the complete equation of the line.