which of the following represent a quadratic function
1.)
[tex]f(x) = 8x + 5 [/tex]
2.)
[tex]f(x) =x {}^{2} - 2x + \times 7[/tex]
3.)
[tex]x \: - 5 \: - 4 \: - 3 \: - 2 \: - 1 \: [/tex]
[tex]y = f(x) \: 3 \: \: \: \: \: \: \: 0 \: \: \: \: \: - 1 \: \: \: \: \: \: 0 \: \: \: \: \: \: \: 3 \: \: [/tex]
4.)
[tex]x \: 1 \: \: \: \: \: 2 \: \: \: \: \: 3 \: \: \: \: \: \: 4 \: \: \: \: \: 5 \: \: \: \: [/tex]
[tex]y = f(x) \: \: \: \: 0 \: \: \: \: \: 1 \: \: \: \: \: \: \: 2 \: \: \: \: \: \: 3 \: \: \: \: \: 4[/tex]
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