Tracing ln[1+3x] and 4ln + 3ln[-1+x]


How can I trace Ln[1+3x] and 4ln + 3ln[-1+x]in the same graph? The question is Section 11.11 – (Not in the book) Find the Taylor Polynomial 𝑇10 "() for the function 𝑓 (𝑥) centered on the number 𝑎. Plot 𝑓 𝑥 and 𝑇10 𝑥 on the same plane xy between -5 ≤ 𝑥 ≤ 5. Use the Taylor polynomial to find the value of y when x = 2 and compare it to the value of y real for 𝑓 𝑥  when x = 2.
𝑓  𝑥  = ln  1 + 3𝑥  centered on 𝑎 = 1. I have the T10 but I can not graph it.