Answer:
It makes it easier to understand math and helps you answer the problem of which math you are doing.
Step-by-step explanation:
They are just a method used to do math
Answer: B.
Step-by-step explanation:
I hope this helps!
The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .