Algebra 1 Common Core Student Edition, Grade 8-9

13. y = 4x 2 15. y = 2x 3 17. Independent: r,
    dependent: V\ volume depends on the length of the
    radius. 19. Let y= number of bags, and y = 67 rr2;

3 bags; 4 bags; 5 bags. 21. y = x 2 + ^ ; the value ofy

is jgl $ more than the square of x. 23. B 25. [2] - jy oz is^89
nearly $.0593, oz is nearly $.0583; the 29-oz can
has the lower cost per ounce. [ 1 ] one minor
computational error

26. The value of y is 3J o
    more than twice
    x; y = 2 x + 3. 4


27. -24, -3, 14.5 28. -11, 1, 11 29. -18, 0, -12.5

Lesson 4-4 pp. 253-259

Go t It?

discrete because you can

only have a whole number

of tickets

b. 700 lb; when g = 0, the

spa is empty, and

W= 700.

Gal l o n s of Wat er , g

continuous because you can

have any amount of water

Number of Tickets, n

Ti m e (mi n), f

4.

Lesso n Ch eck

14

4

!

Jn/ X

/f —2--

3. 
   
   
   
   4. y
   
   
   5. 
      

      7 \
      \ X
      /^0 V
      / 1

      
      
   
   
   
   

5a. f

nh

1 19.5

221

3 22.5

424

5 25.5

6 27

728.5

(^830)
^ J
0 2 4 6 8 1012
Number of Cones, n

6. discrete 7. continuous 8. The graph should not be
   discrete; connect the points with a line so the graph is
   continuous.
   Ex e r c i se s