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# Ninth Grade (Grade 9) Math Questions

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Grade 9 Proportional Relationships
$a/b=c/d$ which is also equal to:
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
Grade 9 Three Dimensional Shapes
Grade 9 Polynomials and Rational Expressions CCSS: HSA-APR.A.1
$(-4m-n)-(2m+3n)$
1. $-2m-4n$
2. $-6m-4n$
3. $-6m+2n$
4. $-8m-2n$
Grade 9 Algebraic Expressions
Simplify the expression $6m + 10 - 10m$
1. $4m + 10$
2. $-4m + 10$
3. $16m + 10$
4. $6m$
Grade 9 Linear Equations
Simplify the following expression.
$3y^2 - 6y + 2 + 3y^2 + 8y$
1. $8y^2 +2$
2. $6y^2 +2 +14y$
3. $6y^2 + 2 - 14$
4. $6y^2 +2y + 2$
Grade 9 Algebraic Expressions
simplify -2 (3x + 6)
1. -6x - 12
2. -6x + 12
3. -18x
4. 6x - 12
Grade 9 Metric System and SI
Grade 9 Algebraic Expressions
The best definition for like terms is
1. the number you multiply a variable by
2. a letter that represents a number
3. terms having the same variables and exponent
4. a polynomial
$5x > 85$
1. 80
2. 20
3. 17
4. 16
Solve $5sqrtx=45$
1. x=3
2. x=9
3. x=81
4. no solution
Simplify $sqrt800$
1. $2sqrt200$
2. $4sqrt50$$20sqrt2$
3. $20sqrt2$
Grade 9 Linear Equations
Which equation represents the graph of the line?
1. $y=-1/2x$
2. $y=-1/2x^2$
3. $y=1/2x^2$
4. $y=1/2x$
Grade 9 Metric System and SI
Which is the SI unit of mass?
1. meter
2. liter
3. gram
4. pound
1. $-3 , -6x, -9y, -10z$
2. $x, 5x, 6xy, 10x^2$
3. $5y, 5x, 5z, 5m$
4. $y, -8y, .7y, -100y$