I have what is supposed to be a curve:
$25x^2 - 4y^2 = 100$
When simplify this to be:
$y = 2.5x - 5$
it is a line.
But isn't it supposed to be the same?
I have what is supposed to be a curve:
$25x^2 - 4y^2 = 100$
When simplify this to be:
$y = 2.5x - 5$
it is a line.
But isn't it supposed to be the same?
It looks like you've gone from
$25x^2-4y^2 = 100$
to
$5x-2y=10\;?$
This is not a valid operation; the square root (or any other power) of a sum is not the sum of the square roots (or powers) of the individual terms.