Questions on Quadratics

State the coordinates of the vertex of y=2(x - 4)² + 9

• (4, 9)

• (-4, 9)

• (1, 27)

• (-1, 59)

Write the equation of a quadratic that is reflected over the x-axis, vertically stretched by a factor of 3, shifted left 4 units and shifted down 5 units

• y = -3x² + 4x - 5

• y = -3(x - 4)² - 5

• y = 3(x + 4)² - 5

• y = -3(x + 4)² - 5

Determine the equation of the parabola shown. This requires a lot of algebra that you would have to show on your paper during the test. See pages 10 and 11 of your notepack for details.

• y = -(x + 1)² + 4

• y = -2/3(x + 1)² + 4 (note: -2/3 is -0.66)

• y = -1/2(x + 1)² + 4 (note: -1/2 is -0.5)

• y = -x² -x + 4

What is the extreme value of y = -8x² + 32x +100?

• 2

• 17

• -2

• (2,17)

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

• 1

• 3

• 2

• 5

Which of the following represents a quadratic function?

Tags

CCSS.HSA-REI.B.4B