Question

finding the equation of a line
ex. find the equation of each line.
a)

Explanation:

Step1: Identify Line Type (Horizontal)

The line is horizontal, so its slope \( m = 0 \). Horizontal lines have equations of the form \( y = k \), where \( k \) is the y - coordinate of any point on the line.

Step2: Determine the Y - Coordinate

Looking at the grid, the horizontal line passes through points where the y - coordinate is, for example, - 1 (assuming the grid has appropriate scaling). So the equation of the line is \( y=-1 \).

Answer:

\( y = - 1 \) (Note: The specific value of \( k \) may depend on the exact grid scaling, but the form is \( y = k \) for a horizontal line. If the horizontal line is at \( y=-1 \) as per typical grid interpretations, this is the equation.)