If the diameter of a wheel is 20cm how far will you travel in 35 miles

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Iknow the answer but the calculator doesn't seem to give the right one

Aproportional relationship between the number of pounds of carrots (x) and the price in dollars (y) is graphed, and the ordered pair (8, 6) is on the graphed line. part a: what is the price of 1 pound of carrots? show your work. (8 points) part b: what will the ordered pair (16, 12) on the graph represent? explain in words.