Why should the first digit in the quotient should be placed over the tens place of the dividend

Ill mark the brainliest if you me with the these three questions 7,8,9

What is 1/3x5 on anuber line what does it look like on a number line

A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.