<PRE><B>Question 782094</B>
The x intercepts are the x values when y=0.  These values are also known as the roots of the equation.&lt;P&gt;
{{{0 =x^2 -2}}}&lt;P&gt;
{{{2 = x^2}}}&lt;P&gt;
{{{sqrt(2) = x}}}  It is + or - square root of 2, but I don&#39;t know how to code the + or - part.&lt;P&gt;
y intercept is the value when x = 0.&lt;P&gt;
y = 0^2 - 2 = -2&lt;P&gt;
{{{ax^2 + bx + c = y}}} is the standard form of a parabola equation, where a, b, and c are the coefficients, or numbers in front of, the squared variable (a), variable (b), and for c is the constant.  x=-b/2a is the equation for the axis of symmetry.  This is the line that runs through the center of the parabola.&lt;P&gt;
For this example a=1, b=0 and c=-2.&lt;P&gt;
-b/2a = -0/2 = 0.  x=0 is the equation for the axis of symmetry.&lt;P&gt;
You can easily tell that from the standard equation.  If there is no x element, just x squared and a constant, then the axis of symmetry is x=0.
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