Quadratic Functions on a Graph

The vertex of this quadratic is...

• (1,16)

• (-3,0)

• (5,0)

• (0,15)

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4

• x = 4

• y = 4

• y = -4

Find the axis of symmetry and vertex y = x² – 8x + 12

• x=3 (3,-3)

• x=4, (4,-4)

• x= -4, (-4,4)

• x=-4 (-4, 60)

What is the domain of the function?

• All Real Numbers

What is the shape of the quadratic called?

• That "U" shape

• There's a name for it?

• Parabola

• No hablo Ingles

Quadratic equations take the shape of a _______ when graphed.

• parabola

• straight line

• snaked line

• elliptical

Define X-intercept

• The highest or lowest point on the graph

• Where the parabola touches or intersects the x-axis

• Where the parabola touches or intersects the y-axis

• A line that divides the graph into two equal parts. i.e. cuts the graph in half

Does this graph have a maxima or minima?

• maxima

• minima

Define Y-intercept

• Where the parabola touches or intersects the x-axis, also called the x-intercept

• The lowest y-value on the graph

• The highest y-value on the graph

• Where the parabola touches or intersects the y-axis

Define Vertex

• Where the parabola touches or intersects the x-axis

• The highest or lowest point on the graph

• Where parabola line touches or intersects the x- axis, also called the x-intercept

• A line that divides the graph into two equal parts. i.e. cuts the graph in half