Math Practice Test Set 9 - My Career Tools

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1. Suppose y varies inversely with x and x = 12 when y = 3. What is the equation of the inverse variation?

A.\(\frac{y}{x}\) = 36

B.y = \(\frac{12}{3}\)

C.y = \(\frac{36}{x}\)

D.12 = \(\frac{3}{y}\)

Question 1 of 10

2. \(\frac{x^{2}+3}{x(x+5)}\)

Find the values that make this rational expression undefined.

A.x = 0 or −5

B.x = 0 or 7

C.x = 0 or 5

D.x = 2 or 4

Question 2 of 10

3. The graph below shows a function.

A.True

B.False

Question 3 of 10

Math-Combining Like Terms

4. Combine like terms by first rearranging the terms, then using the distributive property to factor out the common variable part, and then simplifying.

\(-14x^{2}y - 2xy^{2} + 8x^{2}y + 18xy^{2}\)

A.\(-6x^{2}y + 16xy^{2} \)

B.\(-6x^{2}y + 18xy^{2} \)

C.\(6x^{2}y + 16xy^{2} \)

D.\(-6x^{2}y - 16xy^{2} \)

Question 4 of 10

Math- Equations

5. Solve the equation.

11 − 15x = 13 − 19x

A.\(\frac{1}{2}\)

B.\(-\frac{1}{2}\)

C.8

D.1

Question 5 of 10

6. Solve the equation.

11x + 10 = 19x + 20

A.\(-\frac{5}{4}\)

B.\(\frac{5}{4}\)

C.8

D.-8

Question 6 of 10

Math-Evaluate expression

7. Evaluate the expression at the given values of x and y.

|x − y| at x = 4 and y = 5

A.1

B.-1

C.2

D.-2

Question 7 of 10

Math-Percent of number

8. What number is 89.6% of 125?

A.112

B.110

C.54

D.122

Question 8 of 10

Math-Solution of equations

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

x + 2y = −4
6x − 4y = −56

A.(-8, 2)

B.-(-8, 2)

C.(-16, 8)

D.(-2, 8)

Question 9 of 10

Math-Functions

10. Given f(x) = 3x⁴− 5x² + 8, evaluate f(−1).

A.6

B.-6

C.5

D.12

Question 10 of 10