Explanation:
The point-slope form of a line is given by: y - y0 = m (x - x0), where m is the slope of the line and (x0, y0) is a point on the line.
Given the point (-1, 9) and the slope m = 6, we can write an equation in point-slope form as follows:
y - 9 = 6 (x + 1)
y = 6x + 15
So, m = 6, x0 = -1, and y0 = 9.