medals given i have a very simple question. f(x) = x^2 is that linear or nonlinear?

Question

noseboy908 · Answer

It will always be nonlinear unless the x lacks an exponent above 1.

jdoe0001 · Answer

http://www.mathsisfun.com/algebra/systems-linear-quadratic-equations.html

noseboy908 · Answer

with the x being squared, you get an exponential growing graph.

anonymous · Answer

f(x) = 4x - 1 is that linear @noseboy908

noseboy908 · Answer

look at what I said before: anytime the x's exponent is NOT above 1, then it's linear. so, what's the exponent on "4x-1"?

anonymous · Answer

it would be linear!

noseboy908 · Answer

indeed.

noseboy908 · Answer

any more?

anonymous · Answer

yessss lollll y=3x-1 ?

noseboy908 · Answer

ok, so look at what I said earlier. what's the exponent on the x here?

anonymous · Answer

the x is before the 1 right ?

noseboy908 · Answer

yes, but that doesn't matter.

anonymous · Answer

so the answer is not linear ?

noseboy908 · Answer

I'm afraid you're incorrect. look at the x. does it have any shown exponents?

anonymous · Answer

no the x does not have any exponets i got a little confused sorry.

noseboy908 · Answer

it's ok, just slow down. SO, if the x doesn't't appear to have any exponents, then we can always assume that it's to the power of one. And now, given the rule stated above, is it linear or non?

anonymous · Answer

we can assume that it not linear rght ?

anonymous · Answer

Write a paragraph describing how you found the function rule for the relation. Include whether or not the function is linear or nonlinear and how you know.
If this pattern were to continue, what would 
function- y = 3x-1 i need help i know its linear but how did you get it ?

noseboy908 · Answer

wait, back to your second to latest reply, why do you think that? the x's exponent is 1, is it not?

noseboy908 · Answer

ok, reading your most recent reply,  I know because the x's exponent is assumed to be one. and whenever it's one, it's linear.

anonymous · Answer

okay i understand now you hekoed a lot with that i dont get these linear nonlinear things

noseboy908 · Answer

Don't worry too much about nonlinear equations for now, you (as I understand it) just have to be able to tell if they're linear or not. For now, be happy you're only identifying. So, do you understand how to distinguish the two?