1. The problem states that the y value is 4. 2. Since no specific function or equation is given, we understand that y = 4 is a constant function. 3. The formula for a constant function is: $$y = c$$ where $c$ is a constant. 4. Here, $c = 4$, so the function is: $$y = 4$$ 5. This means for any value of $x$, $y$ will always be 4. 6. This is a horizontal line on the Cartesian plane crossing the y-axis at 4.