Question

Help Math Algebra 2

Answer 1

^^^

Answer 2

major axis = 5*2 = 10
minor axis = 4*2 = 8

Answer 3

how did you get this

Answer 4

first is sprt(25)*2=10;
sce is sqrt(16)*2=8

Answer 5

For general eqn of ellipse
x^2/a^2 + y^2/b^2 = 1

here if a>b, then major axis is along x-axis and minor axis along y-axis...
You can see how this eqn. relates to the graph by putting x=0 and calculating y and vice versa... on putting x=0, we get y = + or - b , which is 2 points
(0,b) and (0,-b), clearly these are on y-axis, hence minor axis length becomes 2*b....
Similarly major axis length is 2*a

If b>a, then by similar arguments, you get minor axis as 2*a and major axis as 2*b

Answer 6

the major semi-axis is the larger of the two
in the equation for an ellipse
\[ \frac{x^2}{a^2} + \frac{y^2}{b^2} =1 \]
a and b are the axes. the larger is the semi-major and the other the semi-minor
so take the square root of the denominators.

Answer 7

See http://www.wolframalpha.com/input/?i=x%5E2%2F16+%2B+y%5E2%2F25+%3D+1
(click on properties)