Unit 3 Quadratic Functions Test REVIEW

3.1 Which is the vertex form of a quadratic?

• $y=a\left(x-h\right)^2+k$

• $y=ax^2+bx+c$

3.1 When using the vertex form of a quadratic, the Line of Symmetry (LOS) is

• x = a

• x = h

• x = y

• x = 3

3.1 When using the vertex form of a quadratic, the vertex is

• (y, k)

• (a, h)

• (x, y)

• (h, k)

3.1 When using vertex form of a quadratic, you find the y-intercept by

• solving for x

• plugging "0" in for x

• subtracting terms

3.1/3.2 The domain for any quadratic function is

• D:{x = all real numbers}

• D:(x = Z)

• D:{x = R}
  

• R:{x = all imaginary numbers}

3.2 Which is the standard form of a quadratic?

• $y=a\left(x-h\right)^2+k$

• $y=ax^2+bx+c$

•  $y=c+ax^2+bx$  

3.2 When using standard form of a quadratic function, the Line of Symmetry (LOS) is

• $x=-\frac{c}{2a}$

• $y=x^2$

• $x=-\frac{\left(b\right)}{2\left(a\right)}$

3.2 When using the standard form of a quadratic function, you find the vertex by

• substituting LOS x = into f(x)

• substituting a = into f(x)

• substituting LOS y = into f(x)

• substituting LOS x = into y-int

3.2 In standard form , the y-intercept =

• x

• b

• a

• c

Tags

CCSS.HSF-IF.C.7A

3.1/3.2 When $a$  is negative, the parabola is facing down.

• True

• False

Tags

CCSS.HSF-IF.C.7A