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Answer:
See below. The answer is incomplete, I couldn't post it.
Step-by-step explanation:
Considering a function 
, it is said to be discontinuous when it has a hole or breaks, it means places where 
cannot be evaluated. For example, when the denominator equals to 0, it is not defined.
Answer:
Image #1: A. 0
Image #2: D. y = -(<em>z</em> - 5)² + 3
Image #3: ( -0.333, 0.111 )
Image #4: B. -4 and 2
Image #5: y = -x²
~Hope this helps!~
