Algebra 1 Common Core Student Edition, Grade 8-9

Mid-Chapter Quiz Go to PowerAlgebra.comMathXL® f or School^

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Do y o u k n o w H OW?

1. Buffet T h e g r a p h s h o w s t h e n u m b e r o f s lic e s o f
   F re n c h t o a s t i n a s e r v in g d is h a t a b r e a k fa s t b u f f e t as
   t im e passes. W h a t a re t h e v a ria b le s? D e s c r ib e h o w th e
   v a r ia b le s a re r e la te d a t v a r io u s p o in t s o n th e g ra p h.
   French Toast
   cu
   to

I i

E

—

n-,

Time

Sketch a graph of the height of each object over time.

Label each section.

2. Recreation Y o u t h r o w a f ly in g d is c i n t o th e a ir. I t h its
   a t re e b r a n c h o n its w a y u p a n d c o m e s t o r e s t o n a
   r o o f. I t s ta ys o n th e r o o f f o r a m in u t e b e fo r e th e w in d
   b lo w s i t b a c k t o th e g r o u n d.


3. Elevator A n e le v a to r f ills w i t h p e o p le o n t h e g r o u n d
   flo o r. M o s t g e t o f f a t th e s e v e n th flo o r , a n d th e
   r e m a in d e r g e t o f f a t t h e n i n t h f lo o r. T h e n t w o p e o p le
   g e t o n a t t h e t e n t h f l o o r a n d a re c a r r ie d b a c k t o th e
   ground floor w ithout any more stops.

For each table, identify the independent and

dependent variables. Then describe the relationship

using words, an equation, and a graph.

4. Ounces of Soda 5. Dog Biscuits Left

Tell whether the function shown by each table is linear

or nonlinear.

1 234

6 81012

(^0 246)
5 5 5 5
8.
0 123
-3 -4 -5 6
Do yo u UN DERSTAND?

9. Vocabulary Does each graph represent a linear
   function o r a nonlinear function^ E xp la in.
   a.

1

d.

EH

mi

1 12 1 20

2 24 2 17

336 3 14

4 48 411

10. W riting T h e s iz e o f a b e e s ’ n e s t in c re a s e s as t im e
    pa sse s. Y o u r f r i e n d says t h a t t im e is th e d e p e n d e n t
    v a r ia b le b e c a u s e s iz e d e p e n d s o n t im e. Is y o u r f r ie n d
    correct? Explain.


11. Open-Ended With some functions, the value of the
    d e p e n d e n t v a r ia b le d e c re a s e s as th e v a lu e o f th e
    in d e p e n d e n t v a r ia b le in c re a s e s. W h a t is a r e a l- w o r ld
    example of this?

252 Chapter 4 Mid-Chapter Quiz