Find the gcf between 3x² y5z3 and 9x4 y3

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20