8.1-8.3 Review

Front

What do we call the graph of a quadratic function?

Back

Parabola

Front

What is a transformation of the graph y = x² + 4?

Back

Shifts up 4.

Front

Where is the axis of symmetry for the parabola y = x² + 4?

Back

x = -1

Front

What is the vertex of y = x² + 16x + 71?

Back

V(-8, 7)

Front

What are the green dots on a parabola called?

Back

Roots or x-intercepts

Front

What is the standard form of a quadratic function?

Back

y = ax² + bx + c

Front

What does the 'a' in the quadratic equation y = ax² + bx + c represent?

Back

The coefficient that determines the direction and width of the parabola.

Front

How do you find the vertex of a parabola given in standard form?

Back

Use the formula x = -b/(2a) to find the x-coordinate, then substitute back to find the y-coordinate.

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

What are the roots of a quadratic function?

Back

The values of x where the graph intersects the x-axis.