ANSWER:
[tex]f(x)=6x+4[/tex]STEP-BY-STEP EXPLANATION:
We have that the linear function in its slope - point form is the following:
[tex]y-y_1=m\cdot(x-x_1)[/tex]replacing, m is the slope and is 6, and x1 =0 and y1 = 4
[tex]\begin{gathered} y-4=6\cdot(x-0) \\ y=6x+4 \end{gathered}[/tex]