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SOLUTION: Can you please assist me in this problem? Find the axis of symmetry for y = x^2 - 9x +3. Thanks Neitra
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Question 279702
:
Can you please assist me in this problem?
Find the axis of symmetry for y = x^2 - 9x +3.
Thanks
Neitra
Found 2 solutions by
nerdybill, scott8148
:
Answer by
nerdybill(7375)
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For ANY quadratic:
Ax^2 + Bx + C
the axis of symmetry is just:
x = -b/(2a)
(which is from the quadratic equation)
.
Therefore, for your problem:
Find the axis of symmetry for y = x^2 - 9x +3.
b is -9
a is 1
.
x = -(-9)/(2*1)
x = 9/2
It is the vertical line that crosses the x-axis at 9/2.
Answer by
scott8148(6628)
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):
You can
put this solution on YOUR website!
the general equation is ___ x = -b / (2a)
in this case ___ x = -(-9) / 2 = 9/2