Answer:
it looks like it would just be -1
Step-by-step explanation:
there two -x and two positive x which would cancel out. three positive 1 and four negative 1. -4+3= -1
that's the best I could come up with
So firstly, factor out h on the left side: 
Next, divide both sides by h: 
Lastly, subtract both sides by b and your answer will be 
Your calculator says error because you cant have a square root of a negative number because there is no solution to that maybe recheck your equation and try again
3x + 4y + 8 = 0
4y = -3x - 8
y = -3/4x - 2....slope here is -3/4. A parallel line will have the same slope.
y = mx + b
slope(m) = -3/4
y int (b) = 4
so ur equation is : y = -3/4x + 4