Math Test Set 12

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1. Jesse grew 1.5 cm this year while Shaniqua grew 2.5 cm. This is an example of

A.correlation

B.causation

C.unrelated events

D.a and b

Question 1 of 10

Math-Solution of equations

2. Use the substitution method to solve each of the following systems.

x = −5 − 2y
−2x − 6y = 18

A.(3,-4)

B.(4,3)

C.\((\frac{3}{4})\)

D.(6,-8)

Question 2 of 10

3. Use the elimination method to solve each of the following systems.

−32x + 7y = −238
8x − 4y = 64

A.(7,-2)

B.(7,2)

C.(6,-2)

D.(7,-6)

Question 3 of 10

4. Use the elimination method to solve each of the following systems.

2x + 2y = 4
3x − 5y = 3

A.\((\frac{13}{8}, \frac{3}{8}) \)

B.\(-(\frac{13}{8}, \frac{3}{8}) \)

C.\((\frac{13}{9}, \frac{3}{9}) \)

D.\(-(\frac{13}{9}, \frac{3}{8}) \)

Question 4 of 10

5. Use the elimination method to solve each of the following systems.

−8x + y = −56
4x + 3y = 56

A.(8,8)

B.(-8,-8)

C.(4,4)

D.(2,2)

Question 5 of 10

6. Which of the points (2, −14), (−1, −6), (−8, 11), and (3, −13) is a solution of the equation y = −2x − 8?

A.(−1, −6)

B.(2, −14)

C.(−8, 11)

D.(3, −13)

Question 6 of 10

7. Use the elimination method to solve each of the following systems.

3x − 7y = −75
−2x − 2y = −10

A.(-4, 9)

B.(4, 9)

C.(-4, -9)

D.(-5, 9)

Question 7 of 10

Math-Exponents

8. Simplify the given exponential expression.

\((−2y)^{3}\)

A.\(-8y^{3} \)

B.\(8y^{3} \)

C.\(-7y^{3} \)

D.\(-16y^{3} \)

Question 8 of 10

Math-Slope

9. Use the substitution method to solve each of the following systems.

−7x + 7y = 63

y = 6 − 2x

A.(-1, 8)

B.-(1,8)

C.(1.6)

D.(2,16)

Question 9 of 10

Math- Equations

10. Solve the equation.

−5(−9x + 7) + 7 = −(−9x − 8)

A.1

B.0

C.-1

D.8

Question 10 of 10

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