Ann rented some movies and video games last month. She did the same this month. The table below shows the number of movies and video games she rented each month. It also shows the total cost (in dollars).

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

i know the point slope is y= 1/11x-46/11