Juliet sells cupcakes at her bakery. The total cost of making the cupcakes is $7.25. She sold each cupcake
for $1.25. Enter an equation that can be used to find
the number of cupcakes, x, Juliet sold if her earnings
were $40.25 after paying out the cost of the cupcakes.

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?