Anyone wanna talk cause I'm super bored right now

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

What is the difference between the equations of a vertical and a horizontal line?