A recipe says to use 4 cups of flour to make 60 cookies. What is the constant of proportionality that relates the number of cookies made, y , to the number of cups of flour used, x ?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126