Help me please help me please

Answer:
[tex]y=-1x+6[/tex]
Step-by-step explanation:
(1,5) & (2,4)
[tex]\frac{4-5}{2-1}=\frac{-1}{1}[/tex] or -1
y-5=-1(x-1)
y-5=-1x+1
y=-1x+6