Answer:
11 
Explanation:
Pre-Solving
We are given that 2 line segments are perpendicular to each other, and that two of the angles created are 4x-6 and x + 6y degrees. 
Recall that perpendicular lines intersect to create 90° angles. 
This means that 4x - 6 and x + 6y are both equal to 90. 
Solving
To start, we can first find the value of x. 
We can use 4x - 6 = 90 to do that.
Add 6 to both sides.
4x = 96 
Divide both sides by 4 
x = 24 
Now, substitute 24 as x in x + 6y = 90. 
24 + 6y = 90
Subtract 24 to both sides
6y = 66 
Divide both sides by 6. 
y = 11 
So, the value of y is 11.