What’s the x intercept please just say what number to put cause I’m confused when it says 15/7

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

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

The measure of angle 0 is 600 degrees