Answer:
y - 9 = -13(x - 1)
Explanation:
sounds as tho you want to find the equation of a line thru the point (1, 9) that has a slope of -13. Use the point-slope formula y - k = m(x - h) for this purpose. Here m = -13, h = 1 and k = 9. Therefore,
y - k = m(x - h) becomes y - 9 = -13(x - 1). This is the desired equation in point-slope form.