The slope-intercept form of a line is written as:

$y = mx + b$

where:

• $m$ is the slope of the line.
• $b$ is the $y$-intercept (the point where the line crosses the $y$-axis).

To write the equation of a line given its slope and $y$-intercept:

1. Substitute the slope into the $m$ position.
2. Substitute the $y$-intercept into the $b$ position.

The completed sentence in the image would be:

"Substitute the slope for $m$ and the $y$-intercept for $b$ in the slope-intercept form."

Would you like more details or have any questions about this process?

Here are five related questions that expand on this concept:

1. How do you determine the slope from two points on a line?
2. What does the slope represent in a real-world context?
3. How can you find the $y$-intercept if you have a point and the slope?
4. How do you convert a linear equation from standard form to slope-intercept form?
5. What is the significance of the sign of the slope in a linear equation?

Tip: To quickly identify the slope and $y$-intercept of a line, rearrange the equation into the form $y = mx + b$. The coefficient of $x$ will be the slope, and the constant term will be the $y$-intercept.