The equation of the line is y = -7
Generally, we can write the equation of a line in the slope-intercept form as;
[tex]y\text{ = mx + b}[/tex]where m is the slope and b is the y-intercept
We already have the slope as 0, so the equation will be;
[tex]y\text{ = b}[/tex]To get the value of b in this case, we only need to put in the y-value of the point through which the line passes
In this case, the point is -7 and thus;
[tex]b\text{ = -7}[/tex]The equation of the line is thus;
[tex]y\text{ = -7}[/tex]