Unit 4 Test Review - Graphing Quadratics

State the vertex of:

y = -2(x - 5)² - 9

• (-5, -9)

• (5, -9)

• (-10, -9)

• (10, 9)

State the x-intercepts of:

y = -3(x - 4)(x + 6)

• (12, 0) and (-18, 0)

• (-12, 0) and (-6, 0)

• (-4, 0) and (6, 0)

• (4, 0) and (-6, 0)

Write a quadratic function in vertex form that has the given vertex and passes through the given point.

Vertex: (-5, 7)

Point: (-3, -5)

• y = -3(x + 5)² + 7

• y = -2(x - 7)² - 5

• y = -1/3(x + 5)² + 7

• y = (x + 7)² + 5

Find the axis of symmetry:

y = -1/12 (x - 6)² + 4

• x = -6

• y = 4

• x = 6

• y = -4

Write in standard form:

y = 3(x - 2)(x + 5)

• y = 3x² + 27x - 30

• y = 3x² + 9x - 30

• y = 3x² + x - 11

• y = x² + 9x - 10

Find the maximum of:

f(x) = -3x² + 12x - 10

• (-2, -46)

• (2, 2)

• (-2, -10)

• (2, 50)

Find the axis of symmetry:

y = x² - 8x + 17

• x = -4

• x = 2

• x = -2

• x = 4

Write a quadratic function in Intercept Form whose graph has x-intercepts of (-3, 0) & (7, 0) and passes through the point (5, -8).

• y = 1/2(x - 3)(x + 7)

• y = 2(x - 3)(x + 7)

• y = 1/2(x + 3)(x - 7)

• y = 2(x + 3)(x - 7)

Does the parabola open up or down?

y = -15 - 9x + 7x²

• Up

• Down

Does the parabola open up or down?

y = 10 - 12x - 3x²

• Up

• Down