Answer
$A(x)=3 x-3$ and $A^{\prime}(x)=3$
Work Step by Step
The function will be $x$ minus 1, in the x-axis, and in the y-axis, it intercepts at 3, so the function will be:
$$A(x)=3(x-1)=3 x-3$$
Using differentiation:
$$A^{\prime}(x)=3$$