Task: Question Answering
Input (English): Problem: in a rectangular coordinate system , if a line passes through the points ( - 15 , - 18 ) , ( 1522 ) and ( x , 2 ) then what is the value of x ? 
Options: a ) - 2 , b ) - 1 , c ) 0 , d ) 1 , e ) 2
Output (English): c