I NEED HELP PLEASE....
9. (03.05 LC)
The functions f(x) and g(x) are described below:
f(x) = 32x + 8
g(x) = 32x −9
The graph of g(x) is obtained by shifting down the graph of f(x) by
units. (5 points)
Score: 0 of 5
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OpenStudy (anonymous):
CAN ANYONE HELP
OpenStudy (anonymous):
Whats the question?
OpenStudy (anonymous):
ABOVE
OpenStudy (phi):
one way to do this, is pick x=0
and figure out f(0) and g(0)
can you do that ?
OpenStudy (anonymous):
IDK I REALLY AM STUMPED ON THESE PROBLEMS
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OpenStudy (phi):
replace x with zero
in
f(x) = 32x + 8
and remember 32x means 32 * x (multiply)
can you do that ?
OpenStudy (anonymous):
YEAH IS THAT ALL U HAVE TO DO
OpenStudy (phi):
what do you get ?
OpenStudy (anonymous):
ONE SEC
OpenStudy (anonymous):
0 ON FX AND 0 ON GX
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OpenStudy (phi):
f(x) = 32x + 8
put in 0 for x
what do you get ?
OpenStudy (anonymous):
SO BY SHIFTING THE GRAPH DOWN ZERO
OpenStudy (anonymous):
IS THE ANSWER
OpenStudy (phi):
f(x) = 32x + 8
put in 0 for x
what do you get ?
OpenStudy (anonymous):
8
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OpenStudy (anonymous):
AND -9 FOR GX
OpenStudy (phi):
and what do you get for g(x) when x is 0 ? yes -9
now f(0) is at 8
and g(0) is at -9
how far down do you have to go to get from +8 down to -9 ?
any idea ?
OpenStudy (anonymous):
17
OpenStudy (phi):
yes. you shift down by 17
that is the answer
OpenStudy (anonymous):
OHH I SEE HOW I GOT IT WRONG THEN I PUT -17 BUT IT ALREADY SAYS DOWN SHIFT SO IT IS JUST 17
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OpenStudy (anonymous):
THX
OpenStudy (phi):
yes. if they just said, "how much was it shifted?" we would say -17
but if they say "how much was it shifted down?" then we say 17
that is a bit tricky. more like an English test than a math test.