SOLUTION: Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry, and draw the graph.
y= 2(x+1)to the 2nd -4
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Question 197247: Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry, and draw the graph.
y= 2(x+1)to the 2nd -4
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Expand the binomial, remove parentheses, and put the equation into the form:
The parabola will open upward if 
and downward if 
.
The coordinates of the vertex, )
, of a parabola described by:
are given by:
 = f\left(\frac{-b}{2a}\right))
So calculate 
then substitute that value for 
in the function and calculate the value of the function for that value of the independent variable.
The equation of the axis of symmetry is 
, so just substitute the calculated value for 
John
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