Question

Show that f (x)= 5x-2, f: R -> is one-one and onto?​

Answer 1

Answer:

it's both

Step-by-step explanation:

if f(a)=f(b)

implies that 5a-2=5b-2

implies that a=b that means that it's injective or one-one

substitute x=(2+a)/5

implies that f(2+a/5)=a

implies that it's onto