Math Test Set 11 - My Career Tools

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1. The graph below shows a function.

A.True

B.False

Question 1 of 10

2. \(\frac{x^{2}-y^{2}}{y^{2}-49} / \frac{y-x}{y+7}\)

Simplify.

A.\(\frac{y-x}{y-7}, x ≠ y, y ≠ - 7 \)

B.\(\frac{-x+y}{y-7}, x ≠ y, y ≠ - 7 \)

C.\(\frac{-x-y}{-y-7}, x ≠ y, y ≠ 7 \)

D.\(\frac{-x-y}{y-7}, x ≠ y, y ≠ - 7 \)

Question 2 of 10

3. \(\frac{x^{2}y-x^{5}y^{7}+x^{8}y^{4}}{x^{2}y}\)

Simplify.

A.\(1 - x^{3}y^{6} + x^{6}y^{3}, x,y ≠ 0\)

B.\(x^{4}y^{2} - x^{7}y^{8} + x^{10}y^{5}, x,y ≠ 0\)

C.\(x^{6}y^{3} - x^{3}y^{6} - 1, x,y ≠ 0 \)

D.\(xy - x^{3}y^{6} + x^{6}y^{3}, x,y ≠ 0 \)

Question 3 of 10

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

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 4 of 10

5. Which equation is a direct variation?

A.y = − 0.7x

B.y= \(\frac{21}{x}\)

C.y-x=4

D.y=3x+2

Question 5 of 10

6. \(\frac{5x+7y}{3(x +y)}\)

Simplify.

A.3

B.\(\frac{28}{3}\)

C.-1

D.No further simplification.

Question 6 of 10

7. \(\frac{7x^{2}-63}{x+3}\)

Simplify the expression.

A.\(\frac{x+3}{7}, x ≠ - 3\)

B.\(\frac{7x^{2}-9}{x},x ≠ - 3\)

C.7(x+3), x ≠ - 3

D.7(x-3), x ≠ - 3

Question 7 of 10

Math-Exponents

8. Simplify the given exponential expression.

\((−3x^{8}y^{2})^{4}\)

A.\(81x^{32}y^{8} \)

B.\(-81x^{32}y^{8} \)

C.\(27x^{32}y^{8} \)

D.\(-27x^{32}y^{8} \)

Question 8 of 10

Math-Word problems

9. Eight more than two times an unknown number is 0. Find the unknown number.

A.-4

B.4

C.-2

D.2

Question 9 of 10

Math- Equations

10. Solve the given equation for x

12x − 15 = −3

A.1

B.2

C.-1

D.-2

Question 10 of 10