2007-12-01 08:54:56 · 5 answers · asked by tonib 1 in Science & Mathematics ➔ Mathematics
how do i find the line of symmetry.
2007-12-01 08:59:23 · update #1
y = 0 in parabpla y^2 = 4ax and
x = 0 in parabola x^2 = 4by
2007-12-01 08:59:16 · answer #1 · answered by sv 7 · 0⤊ 0⤋
It's the vertical line that divides the parabola in half (into two mirror images).
To find the axis of symmetry, just use the x-value of the vertex.
For example, if the vertex of a parabola is (2,-6), the axis of symmetry is x=2
2007-12-01 16:57:23 · answer #2 · answered by maddog27271 6 · 0⤊ 0⤋
It is also called the axis of symmetry. It's the line that divides the parabola into two parts such that one is the mirror image of the other.
if y=ax^2+bx+c
y=2x^2-3x-5 x=-(-3)/2(2) =3/4 or x=3/4 is the line of (axis of) symmetry.
The axis of symmetry is x=-b/2a
If your parabola is of the form
x=ay^2+by+c
y=-b/2a is the line of symmetry.
2007-12-01 17:10:36 · answer #3 · answered by cidyah 7 · 0⤊ 0⤋
the line that splits the parabola in 1/2
it doesn't need to be vertical, it could be horizontal if you have a graph of:
y^2 = something with an x...
the line of symmetry would be horizontal...
However, if the equation squares x, then the line of symmetry would be vertical...
2007-12-01 16:57:41 · answer #4 · answered by sayamiam 6 · 0⤊ 0⤋
if the eq is y = ax^2 + bx + c then the axis of sym is along the vertex x= -b/2a
2007-12-01 16:58:45 · answer #5 · answered by norman 7 · 0⤊ 0⤋