Posted by Haley on Friday, September 23, 2011 at 7:24am.
the graph of f(x) = |x|
is a V with the vertex at the origin.
(made up of y = x in quadrant I and y = -x in quadrant II)
your two graphs are y = x and y = -x
I will do the second part as x ---> 0 for y = -x
= lim (-(x+h) - (-x))/h as x ---> 0
= lim (-x - h + x)/h as x--> 0
= lim -h/h
= -1
do the same with f(x) = y = x to show
a result of +1
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