# Why All Quadratic Graphs are U-Shaped (VIDEO!)

The equation y = ax^2 + bx + c is the equation of a U-shaped graph (x^2) plus the equation of a line (bx+c). If one pauses for a moment, it is not at all obvious that these two shapes added together give another U shape! We explain why in this follow-up video to graphing quadratics.

[p.s. I was human again. There is a small error near the very end of the video. It is not a big deal, but for extra points, can you spot it??]