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Algebra help

Which ordered pairs lie on the graph of the exponential function f(x)=128(0.5)^x. choose all the correct answers

(0,1)

(1,64)

(3,16)

(8,0.5)

User Almouro
by
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1 Answer

6 votes
To determine the correct ordered pairs which will agree with the function, we can substitute values to the function and see whether it agree with each other. We do as follows:

(0,1)
f(x)=128(0.5)^0
f(x)=128

(1,64)
f(x)=128(0.5)^1
f(x) = 64 <--------CORRECT ANSWER

(3,16)
f(x)=128(0.5)^3
f(x) = 16 <--------CORRECT ANSWER

(8,0.5)
f(x)=128(0.5)^8
f(x) = 1/2

Hope this answers the question. Have a nice day.
User Hagello
by
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