Lines A b and c show proportional relationships.(Which line has a constant of proportionality between y and x of 3)

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

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?