SOLUTION: sketch the graph of y = -1/2x^2-2 find the domain of the function f(x) = x-2/x+4 find the domain of the function g(t) = 5t/t^2-9 use the vertical line test to see if the equatio

Question 366979: sketch the graph of y = -1/2x^2-2
find the domain of the function f(x) = x-2/x+4
find the domain of the function g(t) = 5t/t^2-9
use the vertical line test to see if the equations:
y{-x^2, -2(greater than or less than) x (greater than or less than) 2
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
sketch the graph of y = -1/2x^2-2
Write in vertex form:
y = (-1/2)(x-0)^2-2
Vertex at (0,-2)
---
Since the coefficient of x^2 is negative, the
parabola opens downward from (0,-2)
---------
Sketch the graph using the vertex and the downward shape.
If you want other points let x = -2,then -1,then 1,then 2.

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find the domain of the function f(x) = x-2/x+4
All Real Numbers except x = -4.
---------------------
find the domain of the function g(t) = 5t/t^2-9
All Real Numbers except x = 3 or x = -3
---------------------
use the vertical line test to see if the equations:
y{-x^2, -2(greater than or less than) x (greater than or less than) 2
????
Cheers,
Stan H.

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