How do you find the X an Y axis of a quadratic function? I need to know how to do this WITHOUT graphing :) You can use:
y = x2 + 2x - 3?
That quadratic equation as an example, if you want.

Question

How do you find the X an Y axis of a quadratic function? I need to know how to do this WITHOUT graphing :) You can use:
 y = x2 + 2x - 3?
That quadratic equation as an example, if you want.

saifoo.khan · Answer

when x intercpts y = 0

when y intercpts x = 0

anonymous · Answer

Couldyou explain that a little more? Sorry, I don't quite understand what you mean, haha.

saifoo.khan · Answer

Sure, No Problem! =)

anonymous · Answer

Awesome ^^ Thank you!

saifoo.khan · Answer

when x intercpts y = 0
 y = x2 + 2x - 3
0 = x^2 + 2x -3
x = 1, x=-3

when y intercpts x = 0
 y = x2 + 2x - 3
 y = (0)^2 + 2(0) - 3
y  = -3

anonymous · Answer

OH! I see you what you mean. Thanks! That's super easy :]

saifoo.khan · Answer

Whenever a line cuts the x axis, y = 0

Whenever a line cuts the y axis, x = 0.

saifoo.khan · Answer

Surely it is! xD