in the coordinate plane , points ( x , 2 ) and ( 8 , y ) are on line k . if line k passes through the origin and has slope 1 / 2 , then x + y =
"line k passes through the origin and has slope 1 / 2 means that its equation is y = 1 / 2 * x . thus : ( x , 2 ) = ( 4 , 2 ) and ( 8 , y ) = ( 8,4 ) - - > x + y = 4 + 4 = 8 . answer : a"
multiply(multiply(8, 2), divide(2, 2))