Please help asap!
thank you a ton!

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

Me asap! what is the slope of this line? enter your answer in the box.

Ihonestly have no clue if it's each or none.