Answer:
Step-by-step explanation:
Given figure is a rectangle.
In a rectangle , opposite sides are equal
to find out y we equate the opposite sides 10 and 2y+4
Subtract 4 from both sides
Divide both sides by 2
y=5x+8
If its perpendicular it will have opposite slope but the same y intercept
(-x)(x^2 + 4x + 5)
You have to factor out the -x from the rest of the expression.