Question

HELP

Write the equation of the ellipse in standard form.

9x^2+4y^2-72x+40y+208=0

Answer 1

Rewrite as:
9(x^2 - 8x) +4(y^2 +10y) +208 = 0
Complete squares:
9(x^2 -8x + 16) + 4(y^2 + 10y + 25) + 208 = 244
9(x-4)^2 +4(y+5)^2 = 36
Divide by 36:
(x-4)^2/4 + (y+5)^2/9 = 1

x^2/9 + y^2/36 = 1
Center at(0,0)
Major axis || to y-axis
y-intercepts at +/- 6
x-intercepts at +/- 3

Answer 2

was i correct

Answer 3

i was...

Answer 4

which one?

Answer 5

@72595210002

Answer 6

D

Answer 7

does it elp

Answer 8

thank you honey!

Answer 9

your welcome

Answer 10

can u help me