CCSS.Math.Content.HSA.REI.B.4

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation s(t) = –16t² + 64t + 80. What will be the object's maximum height? 

• 2 ft
• 80 ft
• 144 ft
• 64 ft

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

Tags

CCSS.Math.Content.HSA.REI.B.4

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the vertex of y= x² - 8x + 14 ?

• (2, 4)
• (-4, -2)
• (4, -2)
• (-2, 4)

Tags

CCSS.Math.Content.HSA.REI.B.4

Complete the Square and solve the equation.
m² + 12m + 19 = 0

• - 6 ± √ - 19
• 6 ± √ 19
• - 23, - 11
• - 6 ± √ 17

Tags

CCSS.Math.Content.HSA.REI.B.4

Which of the following represents the solutions to the following quadratic function:
9k² = 225

• 4
• 4, -4
• 25, -25
• -5, 5

Tags

CCSS.Math.Content.HSA.REI.B.4

12.  Solve by factoring 
(x - 2 )² = 49

• -5, 9
• ^{7, -7}
• 9, -5
• ^{9, -9}

Tags

CCSS.Math.Content.HSA.REI.B.4

Where the parabola (U shape) crosses the x-axis.

• Domain

• Range

• Y-intercept

• X-intercept

Tags

CCSS.Math.Content.HSA.REI.B.4

4 Determine the value of the discriminant and name the nature of the solution for the following:

x² + 2x - 63

Remember: b² - 4ac

• 256 - 2 reals - Rational

• √(-256 - 2 imaginary solutions

• √(137) - 2 reals - Irrational

• 123 - 2 reals - Rational

Tags

CCSS.Math.Content.HSA.REI.B.4

The area of a rectangular pool table is: x² + 14x +40.

The length is x + 4. What is the width?

• x + 8

• x + 14

• x + 10

• x +4

Tags

CCSS.Math.Content.HSA.REI.B.4