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

Algebra ->  Polynomials-and-rational-expressions -> 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      Log On


   

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) About Me  (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:





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