Let's analyze the problem given in the image.

The problem asks to rotate the line represented by the equation $y = 2x - 3$ around the origin by different angles (90°, 180°, and 270° counterclockwise), and then write the equation of the line for each of those rotations. After that, it asks to describe the relationship between the equation of the preimage (original line) and the equations of the rotated lines.

Step 1: Understanding the Line Rotation

The line has the equation: $y = 2x - 3$ This equation has a slope $m = 2$ and a y-intercept of -3.

When rotating lines about the origin, the slope of the line changes according to the angle of rotation:

• 90° counterclockwise rotation: The slope changes from $m$ to $-\frac{1}{m}$.
• 180° counterclockwise rotation: The slope changes from $m$ to $-m$.
• 270° counterclockwise rotation: The slope changes from $m$ to $\frac{1}{m}$.

Let's calculate the new equations for each rotation.

90° Counterclockwise Rotation

The slope changes to: $m = -\frac{1}{2}$

Substituting into the point-slope form using the rotated slope and passing through the new points, the equation would be: $y = -\frac{1}{2}x + b$ We need to determine $b$ using the rotated points, but generally, after rotation, the exact intercept can vary.

180° Counterclockwise Rotation

The slope becomes the negative of the original slope: $m = -2$

The new equation for this line is: $y = -2x + b$ The new intercept $b$ depends on the transformed values.

270° Counterclockwise Rotation

The slope changes to: $m = \frac{1}{2}$

The line equation becomes: $y = \frac{1}{2}x + b$

Part b: General Relationship

The relationship between the slopes after rotation depends on their reciprocal values. For non-horizontal and non-vertical lines, these rules generally apply due to the consistent change in perpendicular and inverse orientations.

Would you like a deeper explanation of these transformations or calculations for each specific step?

Questions to Consider:

1. How do you find the new intercept $b$ for each rotated line?
2. What happens if you rotate a horizontal line 90° counterclockwise?
3. How would the slope formula change if the line had a different initial slope?
4. Why does a 180° rotation result in the same slope but with an opposite sign?
5. What is the relationship between rotations and reflections over axes?

Tip: When rotating lines, it's helpful to visualize the effect on slope and intercept by sketching the rotations on a coordinate grid.