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For each of the following functions, give the domain and a description of the graph y = f(x)in the xy-plane, including its shape
For each of the following functions, give the domain and a description of the graph y = f(x)in the xy-plane, including its shape
admin
2015-04-10
27
问题
For each of the following functions, give the domain and a description of the graph y = f(x)in the xy-plane, including its shape, and the x- and y-intercepts.
(a)f(x)= -4
(b)f(x)= 100-900x
(c)f(x)= 5 -(x + 20)
2
(d)f(x)=
(e)f(x)= x + |x|
选项
答案
Domain: the set of all real numbers. The graph is two half-lines joined at the origin: one half-line is the negative x-axis and the other is a line starting at the origin with slope 2. Every nonpositive number is an x-intercept, and the y-intercept is 0.
解析
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