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Chapter 3 Review Flashcards | StudBud
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Chapter 3 Review
Chapter 3 Review
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Inequalities
Flashcards
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Questions
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Answers
1
What does everyone love?
word problems?
word problems!
#wordproblems
word problems.
2
Solve: 3
.
|x - 2| + 16 ≥ 43
x > -7 and x < 11
x > 11 and x < -7
x ≥ -7 and x ≤ 11
x ≥ 11 and x ≤ -7
3
What is absolute value?
the most value that something has.
the opposite of whatever is inside the signs.
the final answer in all the land of math.
the distance a number is from zero.
4
Solve: 3x < 12
x > 9
x < 15
x < 4
x > -4
5
Solve:
x
/
-2
> 12
x > -6
x < -24
x > -24
x < -6
6
Once you get the absolute value by itself, what do you have to do?
guess what might be the correct answer.
leave it blank.
split into two equations (or inequalities)
solve it, like a normal equation or inequality.
7
How many cats does Mrs. Martinez have?
2
0
1
3
8
The graph represents what compound inequality?
x < 2 and x < -4
2 < x < -4
x > -4 or x > 2
-4 < x < 2
9
Who 'designed' the absolute value symbol of the bars? ex: |x|
Lodovico Ferrari
Srinivasa Ramanujan
Karl Weierstrass
Albert Einstein
10
Solve: 4
.
|2x| + 1 = -3
{10, 18}
no solution
{10}
{-18, 18}
11
Solve:
3
/
4
x – 7 <
1
/
4
(2x – 2) + 8
x ≤ 58
x > 58
x < 58
x ≥ 58
12
Solve: |n| - 4 = 14
{-10, 10}
{-18, 18}
no solution
{-18, -10}
13
What inequality does the following represent?
x < -2
x > -2
x ≥ -2
x ≤ -2
14
Graphs of compound inequalities connected by 'and'...
point away from each other.
point towards each other.
15
How can you get rid of fractions?
multiply by the denominator.
multiply by the numerator.
divide by the numerator.
divide by the denominator.
16
Set up an inequality and then solve.
8 children
10 children
11 children
9 children
17
Solve: 3x - 10 ≥ 53
x ≤ -43/3
x ≥ -43/3
x ≥ 21
x ≤ 21
18
Solve: |3x| < 42
-14 ≤ x ≤ 14
-14 < x < 14
x ≤ -14 or x ≥ 14
x < -14 or x > 14
19
Which number is a solution of the inequality 7x - 5 ≥ -2?
1
-3
0
-1
20
Solve: 2 < x + 3 ≤ 14
x > -1 and x ≥ 11
x < -1 and x ≤ 11
x < -1 and x ≥ 11
x > -1 and x ≤ 11
21
A student will study French for at least 3 years. Which inequality describes the situation?
y ≤ 3
y < 3
y > 3
y ≥ 3
22
Solve:
2
/
3
x - 4 > 10
x ≥ -21
x > 21
x ≥ -4
x > 4
23
What is Mrs. Martinez's favorite color?
Red
Green
Yellow
Blue
