(4,4) are the coordinates of C prime
Y= 10 + 1.25x
This is the answer because 10 is the initial fee (you start with it) and 1.25 is added for each minute, with each minute being the variable
Its 11/12 , you need to divide the "wanted results" (every dog which is either black, with spots or both ) by every every possible result ( all dogs ). so 11/12=0.92
The coordinate is a solution for the first system (x-2y=4). But the coordinate is not a solution for the second system.
