Question

graph the horizontal or vertical line. y = 3 use the graphing tool to graph the line. click to enlarge graph

Explanation:

Step1: Identify line type

The equation $y = 3$ represents a horizontal line. For any value of $x$, the value of $y$ is always 3.

Step2: Plot points

We can choose some arbitrary $x$-values, say $x=- 4,-2,0,2,4$. The corresponding points are $(-4,3),(-2,3),(0,3),(2,3),(4,3)$.

Step3: Draw the line

Connect the points to form a horizontal line passing through $y = 3$ on the $y$-axis.

Answer:

A horizontal line passing through the point $(0,3)$ on the $y$-axis where for all $x\in R$, $y = 3$.