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What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

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

Given that abcd is a rhombus, what is the value of x?