Question

Did I do this right? Check work please.

Answer 1

a) If \[x^2 + y^2= 25 \]
find dy/dx

b) Find an equation of the tangent to the circle at the point (3,4)

Answer 2

a) 2x + 2y * dy/dx = 0

dy/dx(2y) / 2y = -2x/2y

final answer= -x/y

Answer 3

then

b) I got y = -3/4x+25/4

Answer 4

xx1+yy1=a^2
3x+4y=25
you are correct

Answer 5

what about a?

Answer 6

correct

Answer 7

:D

Answer 8

there are only a and b,where is D

Answer 9

there is no d