Answer:
y = 6
Step-by-step explanation:
The formula of a slope:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
We have the points (-5, 6) and (7, 6). Substitute:
[tex]m=\dfrac{6-6}{7-(-5)}=\dfrac{0}{12}=0[/tex]
The slope m = 0. Therefore it's a horizontal line y = a.
In the given points we have y = 6.