Below are two different functions, f(x) and g(x). What can be determined about their y-intercepts?

Question

jenniferjuice · Answer

attachment

jigglypuff314 · Answer

first, what is the y-intercept of the given graph f(x)

jenniferjuice · Answer

-1? @jigglypuff314

jigglypuff314 · Answer

yes :)
then back tracking the g(x)
what is g(x) when x is 0?

jenniferjuice · Answer

0 ? @jigglypuff314

jigglypuff314 · Answer

not quite :)
every time x goes up 2, g(x) goes up 4
so  from
x     g(x)
4      9
2      5
0      1
so y-intercept of g(x) is 1  right?

jenniferjuice · Answer

yes

jenniferjuice · Answer

i still dont get how to find it when x=2

jigglypuff314 · Answer

every time x goes up 2, g(x) goes up 4
so every time x goes down 2, g(x) goes down 4

so from  x=4 , g(x) =9
to  x=2 , g(x)=9-4=5

jenniferjuice · Answer

wait so its 5 ?

jigglypuff314 · Answer

no, y-intercept is when  x = 0
so from  x=2, g(x)=5
 x=0  is  g(x)=5-4 = 1

jenniferjuice · Answer

so g(x) has a greater y intercept?

jigglypuff314 · Answer

correct :)

jenniferjuice · Answer

thanku