Algebra 1 Common Core Student Edition, Grade 8-9

ft Challenge Find th e v alu es o f x a n d y th a t m ak e e a ch e q u a tio n tru e.

*3

31.

0 x

+

CO

_

ICO i-HCOi

2x - 4. Ly 8 J Li 4j 32.

X - 1

+ -3y

5'= 7 4'

.4 3x. -6 2JC -2 10.

^SAT/ACT

St a n d a r d i ze d Test Pr ep

33. Which matrix is equal to —3 5.5 -1
    -3 2

CD

8.5 2

0 5 CD

2.5 -4 "

CD

' 16.5 - 3 ' "-16.5 3

.-6 -1. .-9 6. CD 9 -6.

34. Which equation represents a line parallel to the graph of y = 3x + 6?
    CD x - |y = 0
    C'GC y = —3x + 2


35. What is the simplified form of 2V108?
    CD 12V3 CD 6 V 12

C D y = |x + 2

CD y = 2x + 6

CD 3V26 CD 2 V 6

Sh o r t
^Response

36. Carlos does his homework at a rate of 25 problems per hour. Cecelia does her
    homework at a rate of 30 problems per hour. Carlos started his homework 12 min
    before Cecelia. How many hours after Carlos started his homework will they have
    done the same number of problems? Show your work.

Mixed Review

Identify the excluded value of each rational function.

37.y = ^ g 38. y = ^ 39./(x)

Get Read y! To p r e p a r e f o r Lesso n 1 2 - 2 , d o Ex e r ci se s 4 0 an d 4 1.

For each table, make a scatter plot of the data. Tell whether a correlation

exists. If so, tell whether the correlation reflects a causal relationship.

Explain your reasoning.

Se e Le sso n 11- 7.

5x

x — 4

4 p> See Lesson 5-7.

40. Sh o e Si z e s a n d Te st Sc o r e s 41. Sa l e s Co m m i ssi o n s
    Shoe Size
    Baker 9 87
    Johns^1194
    Rivera^896
    Samuels 7 75

Products

Sold

Commission 1

Earned (S) |

Andrews 38 310

Garcia 24 250

Jordan 47 448

Walker 53 495

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