Final answer:
Jerry will drive approximately 8.246 kilometers to visit Tom's house.
Step-by-step explanation:
To find how many kilometers Jerry will drive to visit Tom, we can use the concept of displacement. Displacement is the shortest straight-line distance between the initial and final positions.
In this case, Jerry's house is 2 kilometers north and 8 kilometers west of Tom's house. By drawing a diagram or using the Pythagorean theorem, we can determine the displacement as the hypotenuse of a right triangle with legs of 2 and 8 kilometers.
Using the Pythagorean theorem, the displacement is
=

=

≈ 8.246 kilometers.