SOLUTION: Find an exponential function of the form
f(x) = ba^x
that has the given y-intercept and passes through the point P.
y-intercept 8; P(3, 1)
I get 1/2 but my computer says
Algebra.Com
Question 1155241: Find an exponential function of the form
f(x) = ba^x
that has the given y-intercept and passes through the point P.
y-intercept 8; P(3, 1)
I get 1/2 but my computer says it is wrong and I have redone the problem several times.
Found 2 solutions by MathLover1, greenestamps:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
given
y-intercept ;=> is at point (, )
P(, )
recall that
....use point (, )
.....solve for
........eq.1
....use point P(, )
.....solve for
........eq.2
from eq.1 and eq.2 we have
Answer by greenestamps(13198) (Show Source): You can put this solution on YOUR website!
You say "I get 1/2".
What does that mean? The question asks for an exponential function; "1/2" is not a function.
What you found (apparently) was the a in the general form y=ba^x.
The a is 1/2; since the y-intercept (when x=0) is 8, the b in your function is 8.
The answer -- the exponential function -- is y=8(1/2)^x,
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