Question

graph the horizontal or vertical line. y = - 10 use the graphing tool to graph the line. click to enlarge graph

Explanation:

Step1: Identify line type

The equation $y = - 10$ represents a horizontal line. For any value of $x$, $y$ is always - 10.

Step2: Plot points

We can choose some arbitrary $x$ - values, say $x=-3,x = 0,x = 3$. The corresponding points are $(-3,-10),(0,-10),(3,-10)$.

Step3: Draw the line

Connect these points with a straight line. This line will be parallel to the $x$ - axis and pass through the point $(0, - 10)$ on the $y$ - axis.

Answer:

Draw a horizontal line passing through the point $(0,-10)$ on the $y$ - axis. All points on this line have a $y$ - coordinate of - 10 regardless of the $x$ - coordinate.