Unit 7 Quiz 1 Review Answer Key

1a) This graph is not a function as it does not pass the vertical line test, since there will be more than one point on a vertical line.  There is more than one y-coordinate paired with each x-coordinate.

1b) This graph is a function because it passes the vertical line test.  There will only be one point on each vertical line that is drawn.

2a) The relation is a function since each x-coordinate is paired with one and only one y-coordinate.

2b) This function is a linear function since it has a constant first difference in the y-values.

3) y = -3

4) m = 4/3

5) Quadrants II & III

6) x-intercept -- ( 16 ,0)   & y-intercept -- (0, -18)

7) y2 - y1  =   4 - 8     =  -4  = -1
    x2-x1         3 - (-5)       8       2

8) y = -0.5x +4

9) y = 12  & x = -8

10) 3x - 2y = -6    -- Standard Form
      y = 3/2x +3  -- Slope - intercept form
 m = 3/2  (up 3, right 2)
 b = 3
   

Unit 6 Quiz A Review Answer Key

ANSWER KEY

1.         a.  1:5                  b.  4:9

2.  27 games

3.         a.  $2,500         b.  $2.41                  c.  $17.74                  d.  $206.53

4.         $9,600

5.  $3100

Key to Unit 5 Review Assignment

page 282 Chapter Test (1-12 ALL)

page 306(20, 26, 40)

Unit 5 Quiz A Review Sheet

Unit 4 Practice Test #2 Answer Key - My apologies for the delay!

Unit 4 Practice Test Answer Key

Unit 3 Test Prep Problems - Answer Key

Here are the answers to Unit 3 review problems assigned in the previous post. Please check your answers and, if you have a question, send a comment to THIS post. Mrs. Skinner or Mr. Roeser will respond. This review session is open from now until 9:00 PM this evening. Please remember that you should also be consulting your study guide, as there are topics on the guide that are not covered by this problem set. Thanks for participating in this online review.

p. 148 Oral Exercises

#2 -st² and 3t²s; 2s²t and –s²t

Like terms are terms that have the same variable(s) and exponent(s).

#5 degree 8 (Add the exponents of all the variables.)

#7 degree 3

#9 degree 6

#12 -4x³ – 2x² + 6x – 5; cubic four-term polynomial

#14 p²q³ – 3pq⁴; degree 5 binomial

#16 -s²t² + 2s²t + 3st²; quartic trinomial

p. 149 Written Exercises

#43 2a³ + 2ab² + b³

pp. 153-154 Written Exercises

#20 -3r³s⁶

#34 0

To multiply monomials, multiply the coefficients, keep the same base, and add the exponents.

p. 157 Written Exercises

#16 16t¹⁶

#28 10x⁹y⁷

#48 8x⁸ⁿ

pp. 159-160 Written Exercises

#17 2x⁴ – 3x³y – x²y²

#40 Area = 2x² + 5x units²

pp. 162-163 Written Exercises

#16 10k² – 11k – 6

#34 -2a³ – 5a² + 11a - 4

p. 177 Self-Test 3

#3 The dimensions of the pond are 17 ft by 10 ft.