Question

1. write the equation of a horizontal line through (2, 4). y=4
2. write the equation of a vertical line through (-1, -2). x=-1

Explanation:

Question 18

Step1: Recall horizontal line equation

A horizontal line has the equation \( y = k \), where \( k \) is the y - coordinate of any point on the line.

Step2: Determine k for the point (2, 4)

For the point (2, 4), the y - coordinate is 4. So the equation of the horizontal line through (2, 4) is \( y = 4 \).

Step1: Recall vertical line equation

A vertical line has the equation \( x = k \), where \( k \) is the x - coordinate of any point on the line.

Step2: Determine k for the point (-1, -2)

For the point (-1, -2), the x - coordinate is - 1. So the equation of the vertical line through (-1, -2) is \( x=-1 \).

Answer:

\( y = 4 \)

Question 19