text: Function to find distance
code: function shortest_distance ( x1 , y1 , z1 , a , b , c , d ) { d = Math . abs ( ( a * x1 + b * y1 + c * z1 + d ) ) ; let e = Math . sqrt ( a * a + b * b + c * c ) ; document . write ( " " + ( d / e ) ) ; return ; }