Answer:
The equation of the line is [tex]y=-8[/tex]
Step-by-step explanation:
we know that
The equation of the line [tex]y=9[/tex] is a horizontal line (parallel to the x-axis)
The equation of a horizontal line is equal to the y-coordinate of the point that passes through it
In this problem, the line passes through the point (3,-8)
The y-coordinate is -8
therefore
The equation of the line is [tex]y=-8[/tex]