If the graph of the quadratic function y = a x 2 + b x + c crosses the x-axis, the values of x at the crossing points are the roots or solutions of the equation a x 2 + b x + c = 0.

ARMAN SABBAGHI, TIRTHANKAR DASGUPTA, C. F. JEFF WU, Indicator functions and the algebra of the linear-quadratic parameterization, Biometrika, Vol. 101, No. 2 (JUNE ...

All quadratic functions have the same type of curved graphs with a line of symmetry. The graph of the quadratic function \(y = ax^2 + bx + c\) is a smooth curve with one turning point. The turning ...