This is a line on the x axis because it does not intersect with the y axis at all. The line is at x=3 and is a vertical line. If the line was x=-3, it would be to the left of (0,0), but it is positive to the right of the x and y intersection.
You would multiply 16*3 to get an estimate. 16*3= 48 The bike would be about 48 units. I'm assuming you mean a 16:1 scale. 16:1= 16/1 which =16 Hope this helps!
