How to find the equation of a perpendicular line given two ponts

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

Five infinity stones cost $16.80. what is the price per infinity stone ?

Using the rise/run counting method, the slope of the line is