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let's look at choice A
is -4 positive ? No we can skip it.
let's go on to look at B and C... looking at them together because they both say something about the function being even.
let's look at choice B and C?
is f(x)=f(-x) (if so then f is even)?
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Haven't got to D yet we can skip it also because -4 again isn't positive.
so anyways back to my question
what is f(-x)
well you kind of already know by process of elimination that f is even
so you just have to determine if both ends go in same direction or opposite...
let's think about this
what does f(x)=f(-x) mean...
well this means f(10)=f(-10)
and so on...
what can you say about the ends of the graph? same direction or opposite direction?