Standard Form of a Parabola

The parabola y = - 2(x + 2)² + 5 will have a vertex of

• (- 2, 5)

• (2, 5)

• (- 2, - 5)

• (2, - 5)

The parabola y = 3(x + 1)² + 3 has a vertex of

• (3, 3)

• (1, 3)

• ( - 1, 3)

• (3, -1)

The parabola y = 1/2(x + 4)² - 3 will have a vertex of

• (4, - 3)

• (- 4, 3)

• (- 4, - 3)

• (4, 3)

Which of the following equations matches standard form of a quadratic?

• ax + by = c

• y = a(x - h)² + k

• y = ax² + bx + c

• y = mx + b

If we have the equation y=ax²+bx+c, how can we can find the x-coordinate of the vertex?

• -a

• -b/a

• b/2a

• -b/2a

The graph of a quadratic function is called a

• Parabola

• Vertex

• Axis of Symmetry 

• Vertex Form

Tags

CCSS.HSF-IF.C.7A

What does the following equation simplify to?
y=x²+8x+15

• y=(x+2)(x+6)

• y=(x+3)(x+5)

• y=(x-3)(x-5)

• y=(x+1)(x+15)

In order to graph a quadratic equation in standard form, the first two steps are to use the equation _____ to find the axis of symmetry (which is the x coordinate of the vertex), and then you can plug that value back into the equation to find the _____.

• -b/2a, y coordinate of the vertex

• (x-h)^2, y-intercept
  

• (x-r1), solution

• ax^2, vertex

Tags

CCSS.HSF-IF.C.7A

Does the quadratic have a max/min vertex, and does the parabola open up/down?

• max/ opens down

• min/ opens up

• max/ opens up

• min/ opens down

What is the equation for the AXIS OF SYMMETRY from the standard form of a quadratic? (also the x-value of the vertex)