In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
point (4 , 9) x1 = 4 y1 = 9
slope = m = 5
Step 02:
Point-slope form of the line
(y - y1) = m (x - x1)
(y - 9) = 5 (x - 4)
y - 9 = 5x - 20
y = 5x - 20 + 9
y = 5x - 11
The answer is:
y = 5x - 11