What is the equation of the normal to x2+y2=25x^2 + y^2 = 25x2+y2=25 at (3,4)(3, 4)(3,4)?
4x−3y=04x - 3y = 04x−3y=0
3x+4y=253x + 4y = 253x+4y=25
4x+3y=04x + 3y = 04x+3y=0
x=3x = 3x=3