What is the y-intercept of y + 8 =2x

a. 8
b. -8
c. 2
d.4

Which expression is equivalent to -5(3x - 6/7)

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}

What is the mean of the data set 125, 141, 213, 155, 281