Kayla has taken six history quizzes so far, earning the following scores. 7, 8, 8, 8, 10, 9 what score would kayla have to get on the seventh quiz in order to have a mean score of 8? 9 8 7 6

ab will be equal to

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: