Precalulus verifying inverse functions

Question

Are these inverse functions?

h(x)=10+6x/5

f(x)=-2x+5

yes or no ?

Answer 1

NO

h(0) = 10 + 6*0/5 = 10,

so h maps 0 to 10

f(10) = (-2)(10) + 5

= -20 + 5

= -15

so f maps 10 to -15

That is a counterexample which

shows they are not inverses