Find the slope of the lines

first pic question 1
a) -2
b) - 1/2
c) 1/2
d)1

second pic question 2
a) 1/2
b) -2/7
c) 2
d) 1/2

third pic question 3
a) -3/2
b)-2/3
c) 3/5
d)2/3

will give brainlist < plz hurry twt

answer:

4th i think

step-by-step explanation:

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

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step-by-step explanation: