Question

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


Answer
Perfect Square Trinomial
Non-factorable Trinomial
Not enough information
Difference of Two Squares

Answer 1

Difference of two squares.

Use the vertex formula to find the equation.

\[y=a(x-x _{v})2+y _{v}\]

\[0=a(2-0)^{2}-4\] So a =1

Substituting for a
\[0=(1)(x-0)^{2}-4\]

Gives us\[x ^{2}-4\]