Please I need your help :(

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

Determine which postulate or theorem can be used to prove that lmn =nmo

What is the slope of the line (-7,2) (4,6)