The area is 120/(1/4) or 120 x 4 or 480 square inches the width is 6/(1/2) or 6 x 2 or 12 inches to find the length, divide the area by the width 480/12= 40 40 inches Hope this helps :)
The y-intercept is being changed. In the equations given we are using the formula (y=mx +b), b means the y intercept. In this we are changing the y intercept from 2 to -1. There is nothing else being changed.
