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I need help with domain and range

 

 Jan 13, 2024

Best Answer 

 #1
avatar+289 
+1

It can not be a, because that is an exponential function, and the range gets exponentially larger as x gets larger. 

 

It can not be b, because a in a  parabola, there is a vertex, which means that there is a minimum or maximum value to y.

 

I haven't yet learned about logarithms, but I can assume that the range is not equal to the domain there.

 

It is d, because the range is eqqual to the domain, since y = x and y is the range and x is the domain.

 

Answer: D

 Jan 13, 2024
 #1
avatar+289 
+1
Best Answer

It can not be a, because that is an exponential function, and the range gets exponentially larger as x gets larger. 

 

It can not be b, because a in a  parabola, there is a vertex, which means that there is a minimum or maximum value to y.

 

I haven't yet learned about logarithms, but I can assume that the range is not equal to the domain there.

 

It is d, because the range is eqqual to the domain, since y = x and y is the range and x is the domain.

 

Answer: D

DS2011 Jan 13, 2024

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