Geometry review: Which term can be defined as lines in the same plane that never intersect and are always the same distance apart?

Parallel lines are lines in the same plane

that never intersect and are always the same distance apart

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints