Identifying Quadratic Graphs

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Presentation transcript:

Identifying Quadratic Graphs

positive quadratic y = x2 negative quadratic y = –x2

What does this quadratic graph look like? y = x2

What does this quadratic graph look like? y = - x2 ?

What does this quadratic graph look like? y = x2 + 1 ? What does adding one do to the graph?

What does this quadratic graph look like? y = x2 + 2x + 1 ? x -3 -2 -1 1 2 3 y Fill in the chart on your own please

What does this quadratic graph look like? y = x2 – 3 ? What does subtracting 3, do to the parabola?

What does this quadratic graph look like? y = x2 + 5x + 6 ? Please fill in the chart on your own. x -3 -2 -1 1 2 y

Which of these are a happy face shape and which are a sad face shaped? y = x2 + 3x + 6 y = x2 + 3x - 6 y = x2 y = - x2 + 3x - 6 - 3x - 6 y = - x2 +3x + 6 y = - x2 - 3x + 6 y = x2 - 3x + 6 y = - x2 - 3x - 6