Question

Please Help Drawing graph of a function

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Answer 1

I am referring to a.

Answer 2

Write the equation of each then sum them. The slopes are equal when x< 0 and the negative of each other for x >0. So the slope of f+g is twice the slope of either for x < 0 and zero for x>0. Here is the general sketch of (f+g)x = f(x) + g(x)

Answer 3

thank you @ybarrap