The equation $y = 2x + 4$ represents a straight line in slope-intercept form, where:

• The slope $m$ is $2$.
• The y-intercept $b$ is $4$.

This means the line crosses the y-axis at $(0, 4)$ and rises 2 units for every 1 unit it moves to the right.

Would you like more details or have any questions?

Here are five related questions:

1. How do you find the x-intercept of this line?
2. What is the equation of a line parallel to $y = 2x + 4$?
3. How would you graph this line?
4. What is the equation of a line perpendicular to $y = 2x + 4$?
5. How does the slope of this line compare to a line with the equation $y = -\frac{1}{2}x + 3$?

Tip: The slope determines how steep a line is; positive slopes rise, and negative slopes fall as you move from left to right on a graph.