Math Practice Test Set 5 - My Career Tools

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1. \(\frac{x-7}{x^{2}-x-42}\)

Simplify this expression.

A.\(\frac{1}{x+7}, x ≠ - 6\)

B.\(\frac{1}{x+6}, x ≠ 6 \)

C.x + 7, x ≠ - 6,7

D.x + 6, x ≠ - 6,7

Question 1 of 10

2. The equation represents a direct variation.

6x + 4 = y

A.True

B.False

Question 2 of 10

3. Using the function graphed below (assuming the horizontal axis represents x and the vertical axis represents y), fill in the missing value in the corresponding table. Assume the horizontal axis represents x, and the vertical axis represents f(x).

A.2

B.3

C.4

D.5

Question 3 of 10

4. This equation represents a direct variation.

2x = y

A.True

B.False

Question 4 of 10

5. Factor \(9x^{2}− 13x − 10\)

A.(3x + 5)(3x - 2)

B.(3x − 2)(3x + 5)

C.(9x + 5)(x − 2)

D.(9x + 10)(x − 1)

Question 5 of 10

Math-Solution of equations

6. Determine k so that the point (−1, k) is a solution of y = −5x + 3.

A.k = 8

B.k = 7

C.k =16

D.k = 4

Question 6 of 10

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

2x − 7y = −2
7x + 6y = 3

A.\((\frac{9}{61}, \frac{20}{61})\)

B.\(-(\frac{9}{61}, \frac{20}{61})\)

C.\((\frac{9}{61}, \frac{-20}{61}) \)

D.\((\frac{9}{81}, \frac{-20}{62}) \)

Question 7 of 10

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

2x + 3y = −2
−5x + 5y = 2

A.\((\frac{-16}{25}, \frac{-6}{25}) \)

B.\((\frac{-16}{25}, \frac{6}{25}) \)

C.\((\frac{16}{25}, \frac{-6}{25}) \)

D.\((\frac{-18}{25}, \frac{-6}{30}) \)

Question 8 of 10

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

x + 6y = −49
−3x + 4y = −7

A.(-7,-7)

B.-(7,-7)

C.49

D.(7,-7)

Question 9 of 10

Math-Evaluate expression

10. Evaluate the expression at the given value of x.

\(−3x^{2}− 6x + 3\) at \(x = 7 \)

A.-186

B.186

C.-198

D.198

Question 10 of 10