More practice with quadratics and applications

Is it a quadratic? Or linear?

1. Solve the following equations for x:
   1. $x^2 - 5x - 14 = 0$
   2. $2x^2 + 6x = 4$
2. Match the graphs on the board to the following equations (write down the equation and sketch the graph next to the matching equation). Justify your answer.
   1. $y = -3x^2 + 18x - 24$
   2. $y = x^2 - x ...

Practicing with quadratic models

What are quadratic models all about?