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

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

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

Factor
2x² - 13x - 70

• (2x-7)(x+10)
• (7x+5)(x+2)
• (2x+7)(x-10)
• 2(x+7)(x+10)

Tags

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

What's the y-intercept of y = 3x²- 6x + 4

• (4,0)
• (-4,0)
• (0,-4)
• (0,4)

Tags

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

Find the vertex  y = x² - 2x - 5

• V(-2, 10)
• V(-1, 15)
• V(1, -6)
• V(1, -12)

Tags

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

Complete the square for
x² + 12x + ____

• x² + 12x + 144
• x² + 12x + 36
• x² + 12x - 36
• x² + +12x - 144

Tags

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

Solve 14 - x² = 17

• x = ±1.73
• x = 3
• no solution
• x = -3

Tags

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

Given the function f(x) = 4x² - 5, what is the range?

• All real numbers greater than or equal to -5
• All real numbers
• All real numbers greater than or equal to 5
• All real numbers less than or equal to -5

Tags

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

5x² + 9 = 49

• 2√2
• -2√2
• 2√2, -2√2
• √8

Tags

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

If a quadratic is concave up, then the vertex is the...

• Minimum point
• Maximum point

Tags

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

What is the vertex of the function?

• (-3, -16)

• (3, 20)

• (-6, -7)

• (0, -7)

Tags

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