Math Test Set 11 - My Career Tools

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1. Is the following a function? Explain why or why not.

A.Yes, this does represent a function, because all the points are distinct (none of them are coincident.

B.No, this does not represent a function, since a function can not be made up of only points.

C.No, this does not represent a function, since it fails the vertical line test.

D.No, this does not represent a function, since a function is made up of many more points.

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

Math-Percent of number

3. 37.5% of what number is 57?

A.152

B.57

C.150

D.60

Question 3 of 10

Math-Solution of equations

4. 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 4 of 10

Math-Word problems

5. A student’s bank account is overdrawn. After making a deposit of $260, he finds that his account is still overdrawn by an amount of $70. What was his balance before he made his deposit?

A.−$330

B.$330

C.−$335

D.$335

Question 5 of 10

6. Two less than nine times an unknown number is 7. Find the unknown number.

A.1

B.0

C.-1

D.2

Question 6 of 10

Math-Inequalities

7. Solve the given inequality.

−12x + 4 < −56

A.5

B.-12

C.-5

D.12

Question 7 of 10

Math-Evaluate expression

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

$-5x^{2} - 3xy + 5y^{2}$ at $x = -1$ and $y = -2$

A.9

B.-9

C.18

D.-4

Question 8 of 10

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

$4x^{2} + 2x + 6$ at $x = −6 $

A.138

B.-138

C.75

D.-140

Question 9 of 10

10. $3x^{2} + 3x − 4$ at $x = 5$

A.86

B.-86

C.90

D.43

Question 10 of 10