SOLUTION: So, the formula is y=a (times) b (to the power of) x My table is: FOR X: FOR Y: -2 8 -1 4 0 2 1 1 Can you help me find the B-value please?

Algebra ->  Expressions-with-variables -> SOLUTION: So, the formula is y=a (times) b (to the power of) x My table is: FOR X: FOR Y: -2 8 -1 4 0 2 1 1 Can you help me find the B-value please?      Log On


   



Question 1101634: So, the formula is y=a (times) b (to the power of) x
My table is:
FOR X: FOR Y:
-2 8
-1 4
0 2
1 1
Can you help me find the B-value please?

Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
So, the formula is y=a (times) b (to the power of) x
My table is:
FOR X: FOR Y:
-2 8
-1 4
0 2
1 1
Can you help me find the B-value please?
Formula:: y = a*b^x
Solve for "b" using the points (-2,8) and (-1,4):
8 = ab^-2
4 = ab^-1
----------
Divide the top equation by the bottom equation to get:
2 = b^-1
Then b = 1/2
-------------------
Cheers,
Stan H.
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Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
There is no B value.
B and b are distinct and different variables.
X and x are distinct and different variables.
Y and y are distinct and different variables.
Variables are case sensitive.
y=a (times) b (to the power of) x
should be written
y=a*b^x
Mathematics is a language with rules just as other languages have rules on how to spell and write them.