(5,9) m=-9

Question

Find the slope in y intercept form

Answer 1

slope = -9

through point (5,9)

y intercept = b such that

y = -9x +b, plug in the point

9 = -9(5) + b

b = 54

y = -9x +54 is the line's equation in slope intercept form

Answer 2

What you have given consists of two facts:  (1) Slope = m = -9        (2) The line contains the point (5,9).

 

The question should be to find the equation of said line.  You should use "point slope" form:

 

y - 9 = -9(x - 5)  and then you can put the equation into any other form you want.