**Concept: The question tests on basic Coordinate Geometry**

**Solution:**

For 2 perpendicular lines, the product of their slopes m1 * m2 = -1

2y = 4x - 6

So, y = 2x - 3

m1 = 2

2 * m2 = -1

m2 = -1/2

This line has a y intercept of 3. Putting this in the equation y = mx + c, where m is the slope and c is the y intercept, we get y = (-1/2) * x + 3

2y = -x + 6

Therefore 2y + x = 6

Option E