please help with this one to i have no idea how to

Answer:
D.
Step-by-step explanation:
The point slope equation of a line is:
[tex]y - y_{1} = m(x - x_{1})\\[/tex]
Where m being the slope and y1 and x1 being points on a line.
Insert (6,8) and 3 into the equation.
[tex]y - 8 = 3(x - 6)\\[/tex]
Therefore, your answer is D.