Precalculus Review #1

(a+b)² = a² + b²

• True
• False

Tags

CCSS.HSA.APR.C.4

Using interval notation, the inequality  9 ≥ x  should be written:

• [9, ∞)
• (9, ∞)
• (– ∞, 9]
• (– ∞, 9)

Tags

CCSS.6.EE.B.8

If  |x| > 8, then 

• –8 < x < 8
• x > 8 or x < –8
• x > 8
• x > 8 or x > –8

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

(3x^–1)^–2 = ?

• 3x²
• 9x²
• x²/9
• –x²/9

Tags

CCSS.HSA.SSE.B.3

CCSS.HSN.RN.A.2

(x/4)^-2 = ?

• x²/16
• 16/x²
• –16/x²
• –2x/8

Tags

CCSS.6.EE.A.2C

The midpoint of the segment whose endpoints are (–1, 3) and
(3, 3) is ?

• (–2, 0)
• (2, 6)
• (1, 3)
• (1, 2)

Tags

CCSS.HSG.GPE.B.6

The x-coordinate of the vertex of the equation with equation
y = 2x² + 8x – 12 is ?

• –2
• 2
• 4
• –4

Tags

CCSS.HSA.REI.B.4

The discriminant of the quadratic equation 3x² – 4x – 1 = 0  is ?

• √28
• 28
• 4
• 2

Tags

CCSS.HSA-REI.B.4B

The equation of the circle with Center (–3, –2) and radius 4 is?

• (x + 3) + (y + 2) = 16
• (x – 3)² + (y – 2)²  = 16
• (x + 3)² + (y + 2)²  = 16
• (x + 3)² + (y + 2)²  = 4

Tags

CCSS.HSG.GPE.A.1

The solution(s) to the equation
5x² – 2x = 0 is/are?

• x = 2/5
• x = 5/2 
• x = 2/5 and x = 0
• x = 5/2 and x = 0

Tags

CCSS.HSA-REI.B.4B