Equations of Quadratics

Which equation best represents the graph?

• y = 2(x - 4)² + 5

• y = 2(x + 4)² + 5

• y = -2(x - 4)² + 5

• y = -2(x + 4)² + 5

Tags

CCSS.HSF-IF.C.7A

Write the equation of the quadratic in vertex form given the following:
vertex: (4, -2)
point: (0,-6)
opens down

• f(x)=(x-4)²-2

• f(x)=-4(x-4)²-2

• f(x)=1/4(x+4)²-2

• f(x)=-1/4(x-4)²-2

Which Quadratic function has a vertex at (-2,7) and opens down?

• y = -3(x + 2)² + 7

• y = (x - 2)² + 7

• y = -12(x + 2)² - 7

• y = -2(x - 2)² + 7

• A

• B

• C

• D

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

• -1 and 3
• 1 and -3
• -1 and -3
• 1 and 3

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

What are the solutions for this quadratic equation?

• -4 and 0

• 4 and 0

• -2 and 4

• -2 and -4

What are the solutions to the quadratic equation?

• x = -4

• x = 1

• x = -1

• x = 2

• x = 4

When solving a quadratic equation, if you have the number under the radical what would your answer look like?

• 2 decimals/radicals

• 1 answer

• no real solution

• 2 whole/fractions

Tags

CCSS.HSA-REI.B.4B