Algebra 1 Common Core Student Edition, Grade 8-9

Pr act i ce an d Pr o b l em - So l v i n g Ex er ci ses

.1 ^ Practice

MATHEMATICAL

PRACTICES

Determine whether each rate of change is constant. If it is, find the rate of

change and explain what it represents.

See Problem 1.

8. Turtle Walking
   P Time (min) Distance (m)
   1 6
   2 12
   3 15

(^421)
L J

9. H ot Dogs and Buns

£-■ S i Sj f l v >. 5 s t

y TT

1

— 0 X

(^1) —
Find the slope of the line that passes through each pair of points.

17. (0,0), (3, 3) 18. (1,3), (5, 5)


18. ( 0 , - 1 ) , (2, 3) 21. ( - 6 ,1 ) , (4, 8)

Find the slope of each line.

23. A y
    4

X

— 1 0 L

(^1) L

24. y

Li

X

—i o

10. Airplane Descent

0 30,000

29,000

27,500

12 24,000

^ See Problem 2.

See Problem 3.

19. (4, 4), (5, 3)


20. (2, - 3 ) , (5, - 4 )

4^ See Problem 4.

25. y

(^1) i-
X
— 1 0
iL
4 A
298 Ch ap t er 5 Li n ear Fu n ct i o n s