crackd desmos on Instagram: "How we did it 👀👇 The question gives us two points that correspond to line L1 which we can make a linear regression with using a table in desmos. We are also told that line L2, which is perpendicular to line L1, passes through the origin. Since the slope of L1 is 2x, we know the slope of L2 must be -1/2x, which passes through the origin. The (x,y) point of intersection is (-0.4,0.2), which add up to -1/5. Comment DESMOS to join the LARGEST SAT + ACT prep community!