Quadratics and Vertex

Given: y = 1/2(x + 4)² - 5,
Find the axis of symmetry.

• y = 4

• x = -4

• x = 4

• x = -5

What is the axis of symmetry in the function katex latex="y\ =\ \frac{1}{2}\left(x\ -\ 3\right)^2\ +\ 5"?Leave NO spaces in your answer.

If given the equation y = 3(x - 2)² - 4, what is the y-intercept?

• (8, 0)

• (0, 8)

• (0, -4)

• (0, 16)

Tags

CCSS.HSF-IF.C.7A

• open up

• open down

Tags

CCSS.HSF-IF.C.7A

What is the y-intercept?
f(x) = -2x² + 4x - 6

• (0, 6)

• (0, -6)

• (6, 0)

• (-6, 0)

Tags

CCSS.HSF-IF.C.7A

Which function is best represented by this graph?

• 
• 
• 
• 

Tags

CCSS.HSF-IF.C.7A

Write the equation of the quadratic function that has a vertex of (-5, 9) and passes through the point (-7, -15).

• y = 6(x + 5)² + 9

• y = -6(x - 5)² + 9

• y = 6(x - 5)² + 9

• y = -6(x + 5)² + 9

Is this a max or min?

• max

• min

• cannot be determined

Tags

CCSS.HSF-IF.C.7A

What is the equation in vertex form?

• y = 4(x + 3)² - 4

• y = -4(x - 3) - 4

• y = -4(x + 3)² + 4

• y = -4(x - 3)² + 4

If given the equation y = 3(x + 5)² - 4, what is the vertex of the parabola?

• (5, -4)

• (-5, -4)

• (-15, -4)

• (15, -4)