Algebra homework

Question

The graph of y=tan(x+π/2) compared to the graph of y=tanx has:

A. Moved π/2 units right

B. Moved π/2 units up

C. Moved π/2 units down

D. Moved π/2 units left

Answer 1

Let A be a positive number. Then the graph of f(x - A) is the graph of f(x) moved A units to the right. Similarly, the graph of f(x + A) is the graph of f(x) moved A units to the left. Now apply this same reasoning to tan(x + π/2).