Task: Question Answering
Input (English): Problem: in the coordinate plane , points ( x , 5 ) and ( 7 , y ) are on line k . if line k passes through the origin and has slope 5 / 7 , then x + y = 
Options: a ) 13 , b ) 14 , c ) 9 , d ) 10 , e ) 12
Output (English): e