Answer:
y+1 = 4(x-5) or y+5 = 4(x-4) or y=4x-21
Step-by-step explanation:
slope m = [tex]\frac{y-y1}{x-x1}[/tex]
using points given, slope m = (-1+5)/(5-4) = 4/1=4
point slope formula: y-y1 = m(x-x1)
use any point for y1 and x1
y+1 = 4(x-5) or y+5 = 4(x-4)
y=4x-20-1 = 4x-21
