From the given figure we can see that
The graph has x values from -ve infinity to +ve infinity, then
The domain is all real numbers
a)
[tex]D=(-\infty,\infty)[/tex]
The graph is under the x-axis and does not intersect the x-axis, then
The values of y are the negative real numbers, then
The range is all negative real numbers
b)
[tex]R=(-\infty,0)[/tex]
Since the graph just approach the x-axis (not intersect it), then
There is no x-intercept
c) The x-intercept does not exist
Since the graph intersects the y-axis at point (0, -1), then
d) The y-intercept is (0, -1) [ you can write y-intercept is -1]
f(1) means the value of y at x = 1
Look at the graph and find a point on the graph has x-coordinate = 1
You will find point (1, -2)
Then the value of y at x = 1 is -2
e) f(1) = -2
