25. Kepler's Law of Planetary Motion The time it takes for a planet to complete its orbit around the sun is called the planet's sidereal year. In 1618, Johannes Kepler discovered that the sidereal year of a planet is related to the distance the planet is from the sun. The following data show the distances of the planets, and the dwarf planet Pluto, from the sun and their sidereal years. Distance from Sun, x Planet (millions of miles) Sidereal Year, y Mercury 36 0.24 Venus 67 0.62 Earth 93 1.00 Mars 142 1.88 Jupiter 483 11.9 Saturn 887 29.5 Uranus 1785 84.0 Neptune 2797 165.0 Pluto 3675 248.0 DAYA Compute the least-squares regression line