Unit 6 Practice

If given the equation y = 3(x + 5)² - 4, what is the vertex of the parabola?

• (5, -4)
• (-5, -4)
• (-15, -4)
• (15, -4)

What is the axis of symmetry for the following quadratic function: f(x)=1/2(x-4)²+3

• x=4
• x=-4
• x=1/2
• x=3

Given the equation y = 3(x + 5)² - 4,

what is the vertex of the parabola?

• (5, -4)

• (-5, -4)

• (-15, -4)

• (15, -4)

Which quadratic function is represented by the graph?

• y = -(x + 1)² - 4

• y = -(x + 1)² + 4

• y = -(x - 1)² - 4

• y = (x + 1)² + 4

Which quadratic function is represented by the graph?

• y = (x - 2)² + 2

• y = (x + 2)² + 2

• y = (x - 2)² - 2

• y = -(x - 2)² + 2

• all of the above

Which of the following equations is in vertex form?

• f(x) = x² + 6x - 2
• f(x) = (x - 1)² + 2

• y = 9x² - 15x + 21

• y = -3x² - 75x - 4

• y = 9x² + 90x + 221

• y = -3x² - 30x - 79