Find the points of discontinuity of f(x)=x+3, if x≤-3 -2x , if -3<x<3 6x+2 , if x>3

Find the points of discontinuity of $f (x) = \{\begin{matrix} |x| + 3, i f x \leq - 3 \\ - 2 x, i f - 3 < x < 3 \\ 6 x + 2, i f x > 3 \end{matrix}\}$

Matching exercise

Match the items on the right to the items on the left.

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