Evaluate 1/3 - 5/6

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Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.