Question

what is the equation of the red graph pictured? options: $y = 4$, $y = -4$, $x = -4$, $x = 4$

Explanation:

Step1: Identify line type

The red graph is a horizontal line. Horizontal lines have equations of the form $y = k$, where $k$ is a constant (the y-value of all points on the line).

Step2: Find the y-intercept

The red line crosses the y-axis at $y = -4$. All points on this line have a y-coordinate of -4, regardless of the x-coordinate.

Answer:

B. $y = -4$