Choose the best definition for a function. a. the inputs of a relation b. the outputs of a relation c. the movement of a graph either vertically or horizontally. d. a special relation where every input has only one output.

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