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

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