y`=5(5x+1)-(5x-3)5/(5x+1)^2=25x+5-25x+15/25x^2+10x+1=20/25x^2+10x+1
y`(1/5)=20/1+2+1=5
y(1/5)=-1
y=5(x-1/5)-1
y=5x-1-1
y=5x-2
y`=5(5x+1)-(5x-3)5/(5x+1)^2=25x+5-25x+15/25x^2+10x+1=20/25x^2+10x+1
y`(1/5)=20/1+2+1=5
y(1/5)=-1
y=5(x-1/5)-1
y=5x-1-1
y=5x-2