Posted by LISSETT on Sunday, December 16, 2012 at 10:23pm.
Given the following quadratic equation, find
a. the vertex
b. the axis of symmetry
c. the intercepts
d. the domain
e. the range
f. the interval where the function is increasing, and
g. the interval where the function is decreasing
h. Graph the function.
y=x^2+4x

college algebra  Anonymous, Sunday, December 16, 2012 at 10:33pm
The answer to this question is 0.

college algebra  Reiny, Sunday, December 16, 2012 at 10:52pm
change it to the standard form
y = a(xp)^2 + q , by completing the square
y = x^2 = 4x
= x^2 + 4x + 4  4
= (x + 2)^2  4
All the above can now be answered readily.
The form y = a(xp)^2 + q
should be in your text or in your notes from class.
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