SOLUTION: Please help me!!!!
My problem says to graph each quadratic equation and state the vertex and intercepts. The equation is y=x^2+4x. I have to have at least 4 intercepts. Thank you
Question 90212: Please help me!!!!
My problem says to graph each quadratic equation and state the vertex and intercepts. The equation is y=x^2+4x. I have to have at least 4 intercepts. Thank you so much!! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! My problem says to graph each quadratic equation and state the vertex and intercepts. The equation is y=x^2+4x. I have to have at least 4 intercepts.
---------------
y=x^2+4x
Put in vertex form by completing the square on the x-terms:
y = x^2+4x+(4/2)^2 - (4/2)^2
y = x^2+4x+4 - 4
y = (x+2)^2 -4
y+4 = (x+2)^2
-------------
Vertex at (-2,-4)
y-intercept (0,0)
x-intercepts:
x^2+4x=0
x(x+4)=0
x=0 or x=-4
===================
Cheers,
Stan H.
(