Can someone help me with the questions in the picture?

Answer:
[tex] y = 8 [/tex]
Step-by-step explanation:
Equation of the line that passes through (-2, 8) with a slope of 0, can be written in point-slope form, [tex] y - y_1 = m(x - x_1) [/tex] and also in slope-intercept form, [tex] y = mx + b [/tex].
Using a point, (-2, 8) and the slope (m), 0, substitute x1 = -2, y1 = 8 and m = 0 in [tex] y - y_1 = m(x - x_1) [/tex].
Thus:
[tex] y - 8 = 0(x - (-2)) [/tex]
[tex] y - 8 = 0 [/tex]
Rewrite in slope-intercept form
[tex] y - 8 + 8 = 0 + 8 [/tex] (addition property of equality)
[tex] y = 8 [/tex]