How do you sketch the graph of #y=(-x-2)^2# and describe the transformation?
1 Answer
Feb 21, 2018
First, you have to use Binomial Multiplication (FOIL)
Explanation:
That first step is crucial. Many people will just distribute the square across the expression inside the parenthesis, but that is incorrect.
So,
So,
This is a parabola that opens up. The x coordinate of the vertex of a parabola can be found by
To get the y coordinate for the vertex, plug the -2 into your equation:
So, the vertex is at (-2,0)