In two or more complete sentences describe how to determine if the function, f(x) = 2cos(x) is even by looking at a graph.

Observe the attached image

Step-by-step explanation:

A function f(x) is even if

This means that an input value x and -x have the same output value y

Therefore, check the graph and if it has equal values of y for the values of x and -x, then it is an even function.

Then the graph of will have symmetry with respect to the vertical axis

Observe in the attached image the graph of

It always has the same values of y for x and -x. Then It's an even function.

4+4+2x

or

2x+8

step-by-step explanation:

the bolded word " farsighted" could be replaced with visionary.