28) (a) Is the graph pictured below a function?_ 8(66) 4 1. 0 -1- -2- -3- 0 Why or why not. (b) What is the average rate of change from B to C?

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Q: Prove or disprove the following, Vx, y, z ≤ Z(((x+y) | (y+z)) → (x | z) V (y > 0))

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