Robert says that the slope of a line passing through (1,7) and (3,9) is equal to the ratio 1-3/7-9 is this correct

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

Which table shows a proportional relationship between miles traveled and gas used?

What is the absolute value of -100000000000000?