Which of the following is the first step in estimating the line of best fit on a scatter plot graph?

The graph of a line gets what as the value of the slope gets bigger

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?