If the graph of a function passes through the origin, what must be true of the function?

Question

geerky42 · Answer

that function should be equal to zero when input is zero?

anonymous · Answer

here are the options:A.
The graph of the function must be a straight line.
B.
The function will only work for positive values of x.
C.
There cannot be a constant in the equation of the function.
D.
As x increases, y must also increase.

e.mccormick · Answer

Process of elimination...  cross off the ones that have nothing to do wih going through the origin.

geerky42 · Answer

Hmm, For me, it's none of the above... I've seen some function where it has constant yet it pass through origin. I'm not sure... But for any polynomial function, it's C since it is impossible for y to be zero when x is zero if there is constant.

geerky42 · Answer

What do you think, @e.mccormick ?

anonymous · Answer

actually it's seemed to me that it's c

geerky42 · Answer

Yeah, what kind of math class are you taking?

anonymous · Answer

algebra 1

geerky42 · Answer

Yeah, go with C.

anonymous · Answer

alright thanks

geerky42 · Answer

no problem

anonymous · Answer

oh its right!!!!

geerky42 · Answer

cheer

anonymous · Answer

i did

e.mccormick · Answer

Yes, it was c.  a constant would have hifted it off of (0,0), therefore it was impossible to have a constant.  A constant is the y intercept and the y intercept was 0.

e.mccormick · Answer

Sorry for the delay, I was looking at a probability problem..... chancy thing that. =P

anonymous · Answer

that's fine thanks