Question

what is the length of the major axis of the conic section below? ((x-3)^2/(81))+((y+6)^2/(49))=1

Answer 1

Compare the given equation to the standard form:\[
\frac{(x-h)^2}{a^2} + \frac{(y-k)^2}{b^2} = 1
\]The length of the major axis is 2a. So compare the two equations, find 'a', and double it to find the length of the major axis.

Answer 2

i don't understand

Answer 3

a^2 in your equation is 81, take the square root of that and you get 9. Length of the major axis is 2*a. Which is 2*9=18.

Answer 4

that make a lot of since. thank you!!!

Answer 5

i don't understand