It’s 3 because you take the sum of all decreases (which is $9) and divide them by 3
Answer: 6
Step-by-step explanation:
Slope is found by doing:

(x1 and y1 must be from the same ordered pair and x and y must be from the same ordered pair, however point (x1,y1) and (x,y) can be used interchangeably)
Let us say that (x1,y1) is (3,18)
And (x,y) is (5,30)

7/10 - 1/4 use common denominators
28/40 - 10/40 = 18/40 = 9/20
Answer: -2 and -7 i think