Problem 7 is a function because none of the x values repeat. Each x input goes to exactly one y output. The y values can repeat. If the y values repeat, then we don't have a one-to-one function.
In contrast, problem 8 is not a function. We have x = 1 go to y = 8 and y = 6 at the same time. This is one example showing we don't have one output for a given input.
Answer: Formula to calculate percentage are= Winning match/total match *100 And copy paste formula of VLOOKUP in to desire cell formula bar. Example in spreadsheet : Winning match=A5 Total match=A6 Write formula in cell D3: =(A5/A6)*100 And write formula of VLOOKUP into cell D4-D6 to retrieve data from desire cell.
C. Because you have to look for the greatest number. Disregard whether it is negative or positive. Since you are looking for steepness. That does not matter.
