SOLUTION: Could someon help me PLZ graph y=2(x+5)^-3 and label the vertex and all exact interceps, not to scale on the Y axis Thank you

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Question 58658: Could someon help me PLZ
graph y=2(x+5)^-3 and label the vertex and all exact interceps, not to scale on the Y axis
Thank you

Found 2 solutions by Edwin McCravy, funmath:
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
 Could someon help me PLZ 
graph y = 2(x+5)^-3 and label 
the vertex and all exact 
intercepts, not to scale on 
the Y axis 
Thank you

There is no "vertex".  There is no x-intercept.  
The y-intercept is

(0, 2/125).  Since the equation is equivalent to

        2 
y = ----------
     (x + 5)³

The denominator becomes zero at x = -5, thus the 
vertical line whose equation is x = -5 is a 
vertical asymptote.

Since the degree of the denominator, 2, is of 
greater than the degree of the numerator, 0, the 
x-axis, whose equatrion is y = 0, is the 
horizontal asymptote.

Find some points and you get the graph below.  
The vertical line is the vertical asymptote. The 
y-intercept (0, 2/125) is so close to the 
origin that it hardly discernable.  The curve 
does not really coincide with the x-axis but is 
so close to it, there is no way to indicate
that it is not actually coinciding with it.

+graph%28+200%2C+200%2C+-8%2C+2%2C+-1%2C+1%2C+2%2F%28x%2B5%29%5E3%29+

Edwin

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
graph y=2(x+5)^-3 and label the vertex and all exact interceps, not to scale on the Y axis
On the off chance that you meant to type y=2(x+5)^2-3, I'm going to give this a try.
highlight%28y=a%28x-h%29%5E2%2Bk%29 is vertex form, where the vertex is (h,k)
y=2%28x%2B5%29%5E2-3
Vertex: (h,k)=(-5,-3)
:
Y-intercepts happen when x=0, let x=0 and solve for y.
y=2%280%2B5%29%5E2-3
y=2%285%29%5E2-3
y=2%2825%29-3
y=50-3
y=47 There is a y-intercept at (0,47)
:
x-intercepts happen when y=0, let y=0 and solve for x using the square root property:
0=2%28x%2B5%29%5E2-3
0%2B3=2%28x%2B5%29%5E2-3%2B3
3=2%28x%2B5%29%5E2
3%2F2=%282%2F2%29%28x%2B5%29%5E2
3%2F2=%28x%2B5%29%5E2
%2B-sqrt%283%2F2%29=sqrt%28%28x%2B5%29%5E2%29
%2B-sqrt%283%2F2%29=x%2B5
-5%2B-sqrt%283%2F2%29=x%2B5-5
-5%2B-sqrt%283%29%2Fsqrt%282%29=x Some teachers are happy here.
-5%2B-sqrt%283%29%2Asqrt%282%29%2F%28sqrt%282%29%2Asqrt%282%29%29=x
-5%2B-sqrt%286%29%2F2=x
The x intercepts are at (-5-sqrt(6)/2,0) and (-5+sqrt(6)/2,0)
graph%28300%2C200%2C-10%2C5%2C-5%2C50%2C2%28x%2B5%29%5E2-3%29
Happy Calculating!!!