Step 1 :\(m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 5}{4 - 0} = \frac{-5}{4}\)
Step 2 :\(b = y - mx = 5 - 0 = 5\)
Step 3 :\(y = -\frac{5}{4}x + 5\)
Step 4 :\(4y = -5x + 20\)
Step 5 :\(5x + 4y = 20\)
Step 6 :\(\boxed{5x + 4y = 20}\)