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

What does the discriminant tell us?

• The maximum or minimum
• The y-intercept
• The number and type of solutions
• The axis of symmetry

Tags

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

Factor
k² -2k - 24

• (k+4)(k-6)
• (k+4)(k+6)
• (k+6)(k-1)
• (k-4)(k+6)

Tags

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

Solve
16a² - 9 = 0

• a = ^-3/₄, ³/₄ 
• a = ^-4/₃, ⁴/₃ 
• a = ^-9/₁₆, ⁹/₁₆ 
• a = ^-16/₉, ¹⁶/₉ 

Tags

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

Factor: x²-7x+6

• (x-6)(x-1)
• (x+6)(x+1)
• (x-6)(x+1)
• (x+6)(x-1)

Tags

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

Solve by completing the square:
k² − 12k + 23 = 0

• {6 + √13, 6 - √13}
• {-6 + √13, -6 - √13}
• {6 + √59, 6 - √59}
• {-6 + √59, -6 - √59}

Tags

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

Factor:
4n²-17n-15

• (n-10)(6n+1)
• (4n-5)(n-3)
• (n-5)(4n-3)
• (n-5)(4n+3)

Tags

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

When should you decide to Complete the Square?

• When the a value is larger than 1
• When the middle term is odd
• When a = 1 and the middle term is even

Tags

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

Factor: 
x² + 7x + 6

• (x + 6) (x + 1)
• (x + 3) (x + 2)
• (x + 4) ( x + 3)
• (x - 6) ( x -1)

Tags

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

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Tags

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

A diver is standing on a platform above the pool. He jumps form the platform with an initial upward velocity of 8 ft/s. Use the formula: h(t) = −16 t² + 8t + 24

How high is the platform?

• .25 ft

• 24 ft

• 25 ft

• 8 ft

Tags

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