Question 655622
First we find the slope of the perpendicular line:
Using (1,4) and (3,5)
 slope = (y[2]-y[1])/(x[2]-x[1])
       = (5 - 4)/(3 - 1)
       = 1/2
If the line is perpendicular to the above then it's slope is -2 (negative reciprocal)

Using the slope intercept formula, you have y = mx + b where m is the slope and b is the y-intercept

y = -2x + b
We will now use the point (-4,-1)

-1 = -2(-4) + b
-1 = 8 + b
-1 - 8 = b
b = -9

Therefore, the linear equation is y = -2x -9 or 2x + y = -9