We first learn coordinates plane [(+,+),(+,-),(-,-),(-,+)], then we learned about the midpoint formula, which if we learn the coordinates plane first it makes it easier to solve, then the distant formula, it is formed by the Pythagorean theorem when we use three points in coordinates plane. Later on, when solving inequality, we always use graph to help figure out the positie and negative. Lastly, though learning absolute value isn't directly related, it somehow still related. Absolute value will also need to draw, though we could only draw it positively.
