Calculate the slope of a line with a run of 3 and a rise of 9

Taking algebra two apex courses and need with these questions

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true