__ __ =x=m(x-xy) y=4+1-2(x-0) y=4=2× y=-2xfl,

## Step 1
The problem involves the concept of limits in calculus. The limit of a function as $x$ approaches a certain value is the value that the function approaches as $x$ gets closer and closer to that value.

## Step 2
In this problem, we are asked to find the limit of the function $y = 4 + 1 - 2(x - 0)$ as $x$ approaches 0.

## Step 3
The function simplifies to $y = 4 - 2x$.

## Step 4
As $x$ approaches 0, the term $-2x$ becomes 0, leaving us with $y = 4$.