# SYMKC Unit 6 Flashcards

graphs of quadratic functions are _______________ that open up or down

parabolas

The ___________ of a parabola is the maximum (opens down) or minimum value (opens up) of its function

vertex

The _______________ of a parabola is located at the vertex

maximum or minimum

The _______________ is a vertical line that passes through the vertex of a parabola.

axis of symmetry

The ____________ is located where the parabola intersects the y-axis

y-intercept

If the a value of the standard form of a quadratic is positive, which way does the parabola open?

up

If the a value of the standard form of a quadratic is negative, which way does the parabola open?

down

Quadratic functions may be represented in two forms. What are they?

Standard form and Vertex form

Standard Form of a Quadratic Function

Vertex form of a quadratic function

If the quadratic is in standard form, how do you compute the vertex?

What is the equation for the axis of symmetry when the quadratic is in standard form?

What is the y-intercept in the standard form of the equation of a quadratic?

If the parabola opens up, and the a > 0, what is the vertex considered?

minimum

If the parabola opens up, and the a < 0, what is the vertex considered?

maximum