Intercepts and Vertex of Quadratic Equations

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

Tags

CCSS.HSF-IF.C.7A

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Tags

CCSS.HSF-IF.C.7A

The formula x = -b/2a is used to find

• the roots

• the x-value of the vertex

• the y-intercept

• the axis of symmetry

Identify the vertex and intercepts of the graph of the equation:
f(x) = (x + 3)² − 2

• Vertex: (−3, −2); y-intercept: (0, 7); x-intercepts: (−3±√2, 0)

• Vertex: (3, 2); y-intercept: (0, 1); x-intercepts: (±3, 0)

• Vertex: (2, −3); y-intercept: (0, 4); x-intercepts: (−2±√3, 0)

• Vertex: (−3, −2); y-intercept: (0, −2); x-intercepts: (−3, 0), (−7, 0)

Tags

CCSS.HSF-IF.C.7A

The quadratic equation is in STANDARD FORM

y = x² + 3x - 2

it is graphed on the right.

Find the coordinates for the x-intercepts, y-intercept and vertex

• (-35, 0) (0.5, 0)

• y-intercept

• (-1.5, -4.25)

• x-intercept

• (0, -2)

• vertex

Tags

CCSS.HSF-IF.C.7A

Find the vertex of the quadratic:
y = -2x² + 4x + 3

• (0, 3)

• (-1, 5)

• (1, 5)

• (1, -5)

What is the vertex of y=(x + 2)² - 1?

• (2,1)

• (-2,1)

• (0,0)

• (-2,-1)

What is the vertex?
f(x) = -x² - 4x + 12.

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)

Click on the solutions of the following function.

Tags

CCSS.HSF-IF.C.7A

What is the vertex of y= x² - 8x + 14 ?

• (2, 4)

• (-4, -2)

• (4, -2)

• (-2, 4)