Question 110042: I really don't understand...
Find the axis of symmetry.
y=x^2+5x-7
Thank you! Found 2 solutions by edjones, josmiceli:Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! y=ax^2+bx+c
y=x^2+5x-7
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-b/2a is the formula for axis of symmetry and the maximum or minimum at x of a parabola.
-5/2=-2.5=axis of symmetry.
Look at the graph.
Ed
You can put this solution on YOUR website! Symmetry means that it looks the same on both sides of the axis.
Do you know the quadratic formula? That's how I figure out the
axis of symmetry. The formula is:
rewite it as
The first term is the axis of symmetry, and the 2nd term gives you a
value of x on the = side and one on the - side
So find
The equation is
This is in the form
x = -5/2 is the axis of symmetry
