I need help ASAP I can’t figure this out

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

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What is the difference between the equations of a vertical and a horizontal line?