B) -11 - -12 =
e) 18 - 8 =
h) 15- -21 =
k) -17 - -7 =

Good evening ,

Step-by-step explanation:

b) -11 - -12 = -11 + 12 = 12-11=1

e) 18 - 8 = (10+8)-8=10+8-8=10+(8-8)=10+0=10

h) 15- -21 = 15+21=36

k) -17 - -7 = -17+7 = (-10-7)+7=-10+ (-7+7)= -10 +0 =-10.

:)

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.