Go t I t? 2. T h e ta b le s h o w s th e a m o u n t o f s u n s c r e e n l e f t i n a c a n b a s e d o n t h e n u m b e r
o f tim e s th e s u n s c r e e n h a s b e e n u s e d. W h ic h g r a p h c o u ld r e p r e s e n t t h e
d a ta s h o w n i n t h e ta b le?Sunscreen
Number of Uses 0 1 2 3
Amount of Sunscreen (oz) 5 4.8
lilliil!4.6 4.4A. "g c° <V
E £ 3
11B. ° £
£ £ 3 U<<I i 1/1
Number of Uses Number of Uses Number of UsesI n P r o b le m 2, t h e n u m b e r o f d o w n lo a d s , w h ic h is o n t h e v e r t ic a l a x is o f e a c h g ra p h ,
d e p e n d s o n th e d a y , w h ic h is o n th e h o r iz o n t a l a x is. W h e n o n e q u a n t it y d e p e n d s o n
another, show the independent quantity on the horizontal axis and the dependent
quantity on the vertical axis.Pr o b l em 3 Sk et c h i n g a Gr a p h CSI Z)
How can you get1 ^
started?
Identify the tw o variables
that are being related,
such as height and
time. Then look for key
words that describe the
relationship, such as rises
quickly or falls slowly.
Rocketry A model rocket rises quickly and then slows to a stop as its fuel burns out.
It begins to fall quickly until the parachute opens, after which it falls slowly back
to Earth. What sketch of a graph could represent the height of the rocket during its
flight? Label each section.Model Rocket Flight© 0 Got It? 3. a. S u p p o s e y o u s ta r t t o s w in g y o u r s e lf o n a p la y g r o u n d s w in g. Y o u m o v e
b a c k a n d f o r t h a n d s w in g h ig h e r i n t h e a ir. T h e n y o u s lo w ly s w in g t o a
s to p. W h a t s k e tc h o f a g r a p h c o u ld r e p r e s e n t h o w y o u r h e ig h t f r o m th e
g r o u n d m i g h t c h a n g e o v e r t im e? L a b e l e a c h s e c tio n ,
b. Reasoning I f y o u ju m p e d f r o m th e s w in g in s te a d o f s lo w ly s w in g in g t o a
stop, h o w w o u ld the graph in p a rt (a) be different? Explain.236 Chapter 4 An Introduction to Functions