Part 1: Describe the graphs of the functions f(x) = 2x + 1 and g(x) = –2x + 1. (3 points)

Part 2: Compare and contrast the domain and range of f(x) and g(x). (3 points)

my answer is:
Part 1:
the first graph f(x) = 2^x – 3 is a exponential function which curves up forever and to the left negative side forever. However the second graph g(x) = –2^x – 3 is a exponential function which curves down forever and to the left negative side forever.
Part 2: the domain and range are all real numbers.
my teachers reply to my answer:
I'll need you to check the range of these.. keep in mind

Question

Part 1: Describe the graphs of the functions f(x) = 2x + 1 and g(x) = –2x + 1. (3 points) 

Part 2: Compare and contrast the domain and range of f(x) and g(x). (3 points)

my answer is: 
Part 1: 
the first graph f(x) = 2^x – 3 is a exponential function which curves up forever and to the left negative side forever. However the second graph g(x) = –2^x – 3 is a exponential function which curves down forever and to the left negative side forever. 
Part 2: the domain and range are all real numbers. 
my teachers reply to my answer: 
I'll need you to check the range of these.. keep in mind

anonymous · Answer

my teachers reply: 
I'll need you to check the range of these.. keep in mind that they have a horizontal asymptote and then make a note of whether the graph continues above or below that line.

anonymous · Answer

part one: both are straight lines one with positive slope nd other with negative

anonymous · Answer

nd y intercept is 1 in both cases