Quadratic Functions Test

The line of symmetry of this parabola is...

• y=4

• y=-4

• x=4

• x=-4

In the equation f(x)=5(x+3)²-10 what does the 5 do?

• Vertical stretch by 5 (narrow)

• Horizontal compress by 5 (wide)

• Reflect (flip upside down)

• Move up 5

Which of the following is true about the function (with respect to the parent function y=x²) ?

f(x) = -(x + 3)² - 5

• left 5

• right 5

• up 5

• down 5

Does the graph of this equation widen or narrow from the parent function?
g(x) = 3/4 (x - 5)² + 12

• widen
• neither
• narrow

Tags

CCSS.HSF.BF.B.3

CCSS.HSF.IF.C.7

Which quadratic function is represented by 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

What is the vertex of y=3(x-5)²+7?

• (-5,7)

• (5,7)

• (3,7)

• (5,-7)

What is the line of symmetry of

y = 3(x-7)²+8?

• x = -8

• x = 8

• x = -7

• x = 7

What is the axis of symmetry of

y=3x²-6x+8?

• x = -1

• x = 1

• x = -2

• x = 2

What is the vertex of y=2x²-3x+6?

• (0.75, 4.875)

• (4.875, 0.75)

• (-0.75, 9.375)

• (9.375, -0.75)

Determine the nature of the solution for the following using the discriminant:

y = x² + 2x - 63

Remember the discriminant is b² - 4ac

• 2 rational solutions

• 2 irrational solutions

• 1 rational solution

• 0 real solutions

Tags

CCSS.HSA-REI.B.4B