Question

Let f be the function defined by f(x)=(4x-8)/(x^2+5x-14)

write an equation of the lien normal to the graph of f at x=1
how?

Answer 1

F (x)=0. y=0
x=1
(4(1)-8)/(1)^2+5 (1)-14=0
-4/-8=0
4/8=0