The line which you folded is called the line of symmetry. This divides the parabola into two matching halves or mirror images. The equation of the line is x = ___ because it is vertical. Look to see where your folded line crosses the x-axis.

Question

anonymous · Answer

true

nenadmatematika · Answer

post the previous question again please

anonymous · Answer

What do you notice about the vertex and the line of symmetry for this equations y = x2 + 4x + 1?

nenadmatematika · Answer

OK you can solve in so many ways...the fastest I think is to find the first derivative and set it to be zero. So: |dw:1330616072148:dw|