Activity 2:
Direction: State whether each of the following equation represents a quadratic function or not.

Equations:

[tex]y = - (x + 1)(x + 3)[/tex]
[tex]y = 5(x - 4)[/tex]
[tex]y = 2x (x - 3)[/tex]
[tex]y = 49 + 5 {}^{x} [/tex]
[tex]y = 2x {}^{2} + 2x {}^{3} + 10[/tex]

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