Question 157858
Graph the equation:

y = -3

This equation is saying that the value of x will change but y REMAINS -3 on this line forever in BOTH directions on the xy-plane .

To graph, simply go down to -3 on the y-axis and draw a horizontal line through the point (0,-3) extending into quadrants 3 and 4 on the xy-plane.

AGAIN:

Start at the origin, which is the point (0,0).

Go down 3 units on the y-axis.

Draw your horizontal line.

Keep in mind that the line y = -3 will be parallel to the x-axis and BELOW the x-axis at the point (0,-3).

Is this clear?