How do i determine whether the slope is zero, undefined, or neither?
i have the coordinates,
(4, 3) and (-5, 7)
(1, 2) and ( 1, 6)
(6, 2) and ( 9, 2)
(5, -8) and (3, -8)
(8, 7) and (14, 1)
(3, 10) and (3, 5)

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Can someone me on this math worksheet about finding the given variable for these angles, and whether the triangles are similar. i really need these answers i’m so confused: ( !

3.(03.01)the domain of the following relation r {(6, -2), (1, 2), (-3, -4), (-3, 2)} is (1 point)o {-4, -2, 2)^{-3, -3, 1,6}{-4, -2, 2, 2){-3, 1, 6)4.(03.01)dulan created color nanele for a wall usinn a mix of only arepn and blue naints haplotted the quantidescription+