Quadratics Equation

What is the domain and range of the following function:
y = 3x² -6x +5

What is the significance of the ordered pair (2, -4) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

Tags

CCSS.HSF-IF.C.7A

Determine the domain and range of the function

• Domain: All real numbers, Range: All real numbers

• Domain: x ≥ -4, Range: All real numbers

• Domain: All real numbers, Range: y ≥ -4

• Domain: -1 ≤ x ≤ 5, Range: y ≥ -4

What is the equation of the axis of symmetry?

• y = 0

• x = 0

• x = 3

• x = -3

Tags

CCSS.HSF-IF.C.7A

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

• x = -4

• x = 4

• y = 4

• y = -4

Determine the axis of symmetry ofy = -6x² -8

• x = -6

• x = 8

• x = -8

• x = 0

What's the y-intercept of y = 3x²- 6x + 4

• (4,0)

• (-4,0)

• (0,-4)

• (0,4)

Tags

CCSS.HSF-IF.C.7A

What is the vertex of the parabola:
y = -12x + 22 + 2x²

• (3,4)

• (-3,4)

• (3, -4)

• (-3,-4)

Factor:  x² + 13x + 30

• (x + 3)(x + 10)

• (x + 5)(x + 6)

• (x + 2)(x + 15)

• (x + 1)(x + 30)

The equation y = x² + 3x - 18 is graphed.  Based on this graph, what are the roots of the equation x² + 3x - 18 = 0?

• -3 and 6

• 0 and -18

• 3 and -6

• 3 and -18