What type of quadratic equation is represented in the graph below?

Question

anonymous · Answer

attachment

campbell_st · Answer

the roots or zeros are plus or minus 2

then  it y = (x -2)(x+2)

expand for the equation

campbell_st · Answer

so the quadratic is the difference of 2 squares

anonymous · Answer

The answers to chose from are Not enough information

 Non-factorable Trinomial

 Perfect Square Trinomial

 Difference of Two Squares

anonymous · Answer

Transformations lad. y=x^2 starts on the origin. Where does this start and why?

campbell_st · Answer

if you expand (x-2)(x+2) you get 

x^2 - 4

so its y = x^2 - 4

anonymous · Answer

Difference of two squares then

campbell_st · Answer

yes... thats it

anonymous · Answer

I see.

anonymous · Answer

Also another way is just by checking the transformation of the graph.
 $$y=x^2$$ Starts from the origin. This one starts at -4. So it's the same as $$y=x^2 - 4$$

anonymous · Answer

Yeah, I was looking at it that way first

campbell_st · Answer

things to know... a perfect square trinomial will only touch the x axis at one point

the difference of 2 squares will have the y-axis as the line of symmetry