Answer :

first one ...................
(-1,-7) ;
7(-1) - 5(-7) = -7 + 35 = 28 .....TRUE

(7,9) ; 
7(7) - 5(9) = 49 - 45  = 4 .....FALSE

(4,10) ; 
7(4) - 5(10) = 28 - 50 = - 22 .....FALSE

(-6,-14) ; 
7(-6) - 5(-14) = -42 + 70 = 28 .....TRUE

answer
(-1,-7)  and (-6,-14) 

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