8.1: Key Features of Quadratic Functions

Front

What is the significance of the ordered pair (0, -2) to the graph?

Back

It is the y-intercept.

Front

What is the significance of the ordered pair (2, -4) to the graph?

Back

It is the vertex.

Front

Which point is the vertex of the quadratic function?

Back

(-5, -9)

Front

Define Y-intercept.

Back

Where the parabola touches or intersects the y-axis.

Front

What does it mean if a quadratic function has a maximum vertex?

Back

The parabola opens downwards.

Front

What does it mean if a quadratic function has a minimum vertex?

Back

The parabola opens upwards.

Front

What is the axis of symmetry in a quadratic function?

Back

A vertical line that divides the parabola into two mirror-image halves.

Front

How can you find the vertex of a quadratic function in standard form?

Back

Use the formula x = -b/(2a) from the quadratic equation ax^2 + bx + c.

Front

What are the x-intercepts of a quadratic function?

Back

Points where the parabola intersects the x-axis.

Front

What is the general form of a quadratic function?

Back

f(x) = ax^2 + bx + c.