0.1 Real Numbers Flashcards

1
Q

Integer

A

a whole number (neg or pos)

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2
Q

Interval Notation

A

(x, y)
[x,y)
(x, y]

The numbers at the ends of a line segment

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3
Q

Write the interval notation

-3 < x < 5

A

(-3, 5)

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4
Q

Write the interval notation

X > 6

A

(6,∞)

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5
Q

Interpret the inequality

-3 < x <5

A

All real numbers greater than -3 and less than 5

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6
Q

Describe the inequality

–4 ≤ x < 5.

A

all real numbers between –4 and 5, including –3 and excluding 5.

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7
Q

(-2, 3)

Write the inequality

A

-2 < x <3

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8
Q

(-∞, 1)

Write the inequality

A

x < 1

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9
Q

Additive inverse of -3

A

3

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10
Q

Additive inverse of 5

A

-5

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11
Q

Additive inverse of 7 - 3x

A

3x -7

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12
Q

Additive inverse of 2x + 2

A

-2 - 2x

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13
Q

Base of exponent

A

+2

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14
Q

Base of exponent

A

-2

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15
Q
A
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16
Q
A
17
Q
A
18
Q
A
19
Q
A
20
Q

Bounded or unbounded interval?

[a, ∞)

A

Unbounded, because one end is infinite

x ≥ a

21
Q

Bounded or unbounded interval?

(–∞, b)

A

Unbounded

x < b

22
Q

What is the scientific notation of
.00345?

A

3.45 x 10 ^ -3