A line is represented by the equation y = 3x - 7. Which of the following statements about the line is TRUE? A. The y-intercept is 7.

B. The "rise over run" is equivalent to
1/3

.

C. The point (1, 4) lies on the line.

D. The line has a positive slope

Planet earth has a mass of 5.9726x10²⁴ kg.then: 5.9726x10²⁴ kg=100% of the total earth mass.if the water´s mass=5x10-4 % of the total mass, we can solve this problem by the rule of three.5.9726x10²⁴ %*10⁻⁴ %x=(5.9726x10²³ kg)(5*10⁻⁴  %) / 100 %=2.9863x10¹⁹ kganswer:   the mass of the planet´s water would be   2.9863 x 10¹⁹ kg.