Which of these graphs represents a function?

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.

answer is  

minor arc – sw

major arc – stu

semicircle – wst

i got it down chief.