Bowen Bush
09/15/2024 · Junior High School
1y2 11. Algebra If the slope of \( \overline{X Y} \) is 0 , and \( X(2,3) \) and \( Y(-1, k) \), find \( k \). 12. Angles \( A \) and \( B \) are a pair of alternate interior angles on a pair of parallel
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Step-by-step Solution
To solve the problem, we start with the first part regarding the slope of the line segment \( \overline{XY} \).
### Part 1: Finding \( k \)
The slope of a line through two points \( (x_1, y_1) \) and \( (x_2, y_2) \) is given by the formula:
\[
\text{slope} = \frac{y_2 - y_1}{x_2 - x_1}
\]
In this case, the points are \( X(2, 3) \) and \( Y(-1, k) \). The slope of \( \overline{XY} \) is given to be 0, which means the line is horizontal. Therefore, the change in \( y \) must be 0:
\[
\frac{k - 3}{-1 - 2} = 0
\]
This simplifies to:
\[
\frac{k - 3}{-3} = 0
\]
For the fraction to equal 0, the numerator must be 0:
\[
k - 3 = 0
\]
Solving for \( k \):
\[
k = 3
\]
### Part 2: Angles \( A \) and \( B \)
Since angles \( A \) and \( B \) are described as alternate interior angles formed by a transversal intersecting two parallel lines, we can conclude that:
- Alternate interior angles are equal when the lines are parallel.
Thus, if \( A \) and \( B \) are alternate interior angles, we have:
\[
A = B
\]
If you have specific values or relationships for angles \( A \) and \( B \), please provide them for further analysis.
### Summary
1. The value of \( k \) is \( 3 \).
2. Angles \( A \) and \( B \) are equal if they are alternate interior angles formed by a transversal intersecting parallel lines.
Quick Answer
The value of \( k \) is 3. If \( A \) and \( B \) are alternate interior angles, they are equal.
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