Asked by Kira
Evaluate each function over the domain {-1,0,1,2}. As the values of the domain increase, do the values of the function increase of decrease?
1. y = 3^x
2.y = 3(1/5)^x
^These are the listed equations.
I really need help with this question, cause I am really lost. Could someone help me solve these and write a step by step explanation on how? Thank you!
-Kira
1. y = 3^x
2.y = 3(1/5)^x
^These are the listed equations.
I really need help with this question, cause I am really lost. Could someone help me solve these and write a step by step explanation on how? Thank you!
-Kira
Answers
Answered by
oobleck
just plug in the domain values.
3^-1 = 1/3
3^0 = 1
and so on
For the function y=b^x, then as x increases
if b > 1, y increases, just as with compound interest
If b < 1, y decreases, as with radioactive decay
The graphs in your text should show this quite clearly.
3^-1 = 1/3
3^0 = 1
and so on
For the function y=b^x, then as x increases
if b > 1, y increases, just as with compound interest
If b < 1, y decreases, as with radioactive decay
The graphs in your text should show this quite clearly.
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