$[$A$].$ Functions

A function $\text{'}f\text{'}$ is defined by $f(x)=2x-5.$ Write down the values of $($a$).f(-3)$

$($b$).f(\frac{1}{2})$

If $f(x)=3x-5,$ then $f^{-1}(x)$ is

a$)$ Given by $\frac{1}{3x-5}$

b$)$ Given by $\frac{x5}{3}$

c$)$ does not exist because $f$ is not one$-$one

d$)$ does not exist because $f$ is not onto

State whether the following are function or not? If function then find domain, Range and Codomain of this.

$($a$)$

$($b$)$

$($c$)$