IM2 21 Standard Form Graphing

Identify A, B, and C if y = 3x² + 5x - 8

• A=3, B=5, C=-8

• A=3, B=-8, C=5

• A=3x², B=5x, C=-8

• A=3x² , B=-8, C=5x

Does the equation open up or down? 
Y = -3x² +7x - 2

• up
• down
• Neither; it opens to the right.
• Neither; it opens to the left.

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Find the y-intercept y = x² - 6x + 5

• (0, 8)

• (0, - 6)

• (5, 0)

• (0, 5)

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

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 substitute that value back into the equation to find the _____.

• $\frac{-b}{2a}$ , y value for the vertex

• $\left(x-h\right)^2$ , y value for the solution

• $\frac{-2b}{a}$ , y value for the vertex

• $ax^2$ , vertex

What is the formula above primarily used for?

• Finding the axis of symmetry from standard form
• Finding the vertex from standard form
• Finding the vertex from vertex form
• Finding the vertex from standard form

Tags

CCSS.HSA.REI.B.4

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

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

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

Calculate the line of symmetry, vertex, y-intercept and 3 symmetric points to graph the quadratic.

• A

• B

• C

• D

Calculate the line of symmetry, vertex, y-intercept and 3 symmetric points to graph the quadratic.

• A

• B

• C

• D