The question said we shoud write the equation of the horizontal line that passes through the point (9, -6)
Given the point (9, -6)
We are to find the equation for the horizontal line passing through the given point as stated in the question.
Recall, the horizontal line is patrallel to x - axis, so the slope of our rqired line is 0.
The point slope form is given as:
y - y1 = m(x - x1)
So, the line equation in point slope form is:
y - (-6) = 0(x - 9)
y + 6 = 0
y = 0 - 6
y = -6