To find the slope of the line given by the equation y = x + 3, we need to identify the form of the equation. This equation is in the slope-intercept form, which is expressed as y = mx + b, where m represents the slope and b represents the y-intercept.
In our equation, y = x + 3, we can see that the coefficient of x is 1. Therefore, the slope m is equal to 1. This means that for every unit increase in x, y increases by 1 unit.
In conclusion, the slope of the line represented by the equation y = x + 3 is 1.