The equation $y = x + 3$ represents a straight line in the form of $y = mx + b$, where:

• $m$ is the slope of the line, which in this case is $1$ (since there is no coefficient in front of $x$, it's assumed to be $1$).
• $b$ is the y-intercept, which is $3$ (the constant term).

This means the line crosses the y-axis at $(0, 3)$, and for every increase of $1$ unit in $x$, $y$ increases by $1$ unit.

Would you like more details about how to graph this equation or how it behaves?

Here are 5 related questions to expand your understanding:

1. How do you find the slope of a line from an equation?
2. What is the significance of the y-intercept in a linear equation?
3. How do you determine if two lines are parallel?
4. What is the general form of a linear equation?
5. How can you find the x-intercept of this line?

Tip: When graphing a linear equation, you only need two points to draw the line. The y-intercept is usually one of the easiest points to start with.