Question

If time is the input, what is the equation that represents this relationship?

Answer 1

two points of the graph of this relationship are: (0,1) and (2,4), therefore we have to calculate the slope

$m=\frac{4-1}{2-0}=\frac{3}{2}$

Having the slope we can find the equation

$\begin{gathered} y-1=\frac{3}{2}(x-0)=\frac{3}{2}x \\ y=\frac{3}{2}x+1 \end{gathered}$