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# Finite Mathematics

Please assist with homework, just want to check my answers.

1. Solve the inequality and graph the solution. x2 + 5x &#8805; -4

A) (-&#8734;, -4]

-4
B) [-1, &#8734;)

-1
C) [-4, -1]

-4 -1
D) (-&#8734;, -4] or [-1, &#8734;)

-4 -1

2. Graph the linear equation. 5x = y - 5

A)

B)

C)

D)

3. Write an equation in slope-intercept form of a line satisfying the given conditions.

Slope - ; y-intercept
A) y = x +
B) y = - x -
C) y = x -
D) y = - x +

4. Solve the inequality.

> x
A) (0, 4) or (7, &#8734;)
B) (-&#8734;, 0) or (4, 7)
C) (7, &#8734;)
D) (-&#8734;, 4) or (7, &#8734;)

5. Write an equation in slope-intercept form of a line satisfying the given conditions.

m = - ; b = 9
A) y = - x - 9
B) y = - x + 9
C) y = x + 9
D) y = x - 9

6. Find the x-intercepts and y-intercepts of the graph of the equation. y = x2 + 8
A) y-intercept (8, 0), no x-intercepts
B) x-intercept (8, 0), no y-intercepts
C) y-intercept (0, 8), no x-intercepts
D) y-intercept (0, 8), x-intercept (8, 0)

7. Solve the inequality.

> 0
A)
B)
C)
D)

8. Find the slope and the y-intercept of the line.

y = x
A) m = ; b =
B) m = ; b = 0
C) m = 0; b =
D) m = 1; b = 0

9. Solve the inequality and graph the solution.

- 1 > 2
A)
B)
C)
D)

10. Find the slope and the y-intercept of the line. 3x - 4y = 14
A) m = ; b = -
B) m = ; b = -
C) m = - ; b = 14
D) m = - ; b = -4

11. Solve the problem. Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were \$4500 in 1982 and \$69,500 in 1987. Let x = 0 represent 1982. Find the equation giving yearly sales S(x).
A) S(x) = 65,000x + 69,500
B) S(x) = 65,000x + 4500
C) S(x) = 13,000x + 4500
D) S(x) = 13,000x + 69,500

12. Solve the inequality and graph the solution. <
A)
B)
C)
D)

13. Graph the linear equation. -4x - 12y = 32

A)

B)

C)

D)

14. Find the x- and y-intercepts for the equation. Then graph the equation.

6y - 2x = -8

A) , (-4, 0)

B) , (4, 0)

15. Identify whether the slope is positive, negative, zero, or undefined.

A) Positive
B) Undefined
C) Zero
D) Negative

16. Find the slope of the line, if it is defined. Through (7, -4) and (3, 8)
A) 4
B) -3
C) 12
D) 3

17. Solve the inequality and graph the solution. x2 + 2x &#8805; 8

A) [-4, 2]

-4 2
B) (-&#8734;, -4]

-4
C) [2, &#8734;)

2
D) (-&#8734;, -4] or [2, &#8734;)

-4 2

18. Write an equation in slope-intercept form of a line satisfying the given conditions.

Slope - ; y-intercept 3
A) y = x - 3
B) y = - x - 3
C) y = x + 3
D) y = - x + 3

19. Solve the inequality. 8k3 - 22k2 &#8804; 6k
A) or
B) or
C) or
D) or

20. Graph the linear equation. y + 3 = 0

A)

B)

C)

D)

#### Solution Summary

The Correct Answers are provided.

\$2.19