Hi, can you explain help me why the "the equation of the oblique asymptote is y=3x+1"

Thank you!

Identify any vertical, horizontal, or oblique asymptotes in the graph of y = f(x). State the domai Ay 20- 10- Identify any vertical asymptotes. Select the correct choice below and, if necessary, fill in the a A. There is one vertical asymptote. Its equation is x = 3 . 20 10 20 (Type an equation.) O B. There are two vertical asymptotes. The equation of the leftmost one is and the equ (Type equations.) O C. There are no vertical asymptotes. Identify the horizontal or oblique asymptote if one exists. Select the correct choice below and, 20 O A. The equation of the horizontal asymptote is (Type an equation.) O B. The equation of the oblique asymptote is y = 3x + 1. (Type an equation in slope-intercept form.) OK O C. There is no horizontal asymptote. The domain is ( - 00,3)U(3,00)