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$a/b=c/d$ is also equal to which of the following?
2. a/c=b/d
3. b/a=d/c
4. (a+b)/b=(c+d)/d
5. none of the above
6. all of the above
Name all the sets to which the following number belongs. $sqrt16$
1. Irrational
2. Rational only
3. Rational & Integer
4. Rational, Integer, Whole, & Natural
Solve for x.
$7|x-6| =49$
1. $x=55$
2. $x=13$
3. $x=55 or x=-43$
4. $x=13 or x=-1$
Grade 9 Rational and Irrational Numbers
Solve the equation $|1-2x|+6=9$.
1. $x= -1$
2. $x= -2, 0$
3. $x= -1, 2$
4. $x= -2,1$
What are integers?
1. Positive and negative whole numbers and zero
2. The point at which the x and y axes cross (0, 0)
3. The line across the bottom of the graph
Which is not a rational number?
1. $1/3$
2. $0.25$
3. $0.6666666...$
4. $sqrt(2)$
When isolating the absolute value part of the equation, what steps should you do and in what order?

$3-4|x-4| =27$
1. Add 4 on both sides, then divide both sides by 3.
2. Subtract 3 on both sides, then divide both sides by 4.
3. Subtract 3 on both sides, then add 4 on both sides.
4. Add 3 on both sides, then multiply both sides by 4.
5. Subtract 3 on both sides, then divide both sides by -4.
Grade 9 Arithmetic and Number Concepts
5
1. Counting number
2. Whole number
3. Integer
4. Rational
5. Irrational
6. Real
Grade 9 Fractions and Ratios CCSS: HSG-MG.A.2
Grade 9 Arithmetic and Number Concepts
The science of numbers.
1. Arithmetic
3. Subtraction
4. Division
5. Multiplication
6. Sum
7. Difference
8. Quotient
Classify the number. $-4^2$