Co m m o n Co r e Cu m u l a t i v e
St a n d a r d s Rev i ew
ASSESSMENTT I P S F O R S
Some q uestions o n standardized
tests ask you to use a graph.
Read th e sam ple question at
the right. Then follow th e tips to
answ er it.TIP 1
Identifying the
y-intercept may
help eliminat e some
possibilities.W hat is an eq u a tio n of th e line show n
below?C D y = ~x — 1 C O y = 3x - 1GD y = + \ CO y = 3x +2
TIP 2
Fi n d t h e sl o p e b y u si n g t h e
point t hat represent s t he
y-intercept and another point
on t h e line.Think I t Through
You can see from th e graph that
th e y-intercept is - 1. So you
can elim inate choices B an d D.
To get from (0, - 1 ) to (1, 2),
m ove 3 u n its up an d 1 u n it toq
th e right. The slope is y = 3. So
an equation is y = 3x - 1. The
correct answ er is C.Vocabulary Builder
As you solve test items, you must understand
the meanings of mathematical terms. Choose the
correct term to complete each sentence.
A. The (dependent, independent) v ariab le p rovides
th e o u tp u t values of a function.
B. The set of all possible values for th e d ep e n d e n t
variable is called th e (dom ain, range).
C. The (slope, y-intercept) of a line is d eterm in e d by
the ratio ^ f|.
D. A n (equation, inequality) is a m ath sentence th at
shows the relationship betw een two quantities
th at m ay n o t have the sam e value.E. (Parallel, Perpendicular) lines are lines in the
sam e p lane th at never intersect.^ Sel ect ed Resp o n se
Read each question. Then write the letter of the correct
answer on your paper.- W hich is an equation of a line w ith slope 3?
CD y = 3x - 4 CO y = 4x - 3
GD y = -3 x + 3 CO y = -3x - 5 - Ben h as a cell p h o n e p la n w here h e pays $12 p er
m o n th plus $.10 p e r m in u te of talk time. The equation
y = O.lOx + 12 can be u sed to find his m onthly
p h o n e bill y given th e n u m b e r of m inutes x he
spends talking. W hich set or inequality represents a
reasonable range of th e function?
CD {0,12} CO 12 < y
CO 0 < y < 12 CD 0 <y
358 Ch ap t er 5 Co m m o n Co r e Cu m u l a t i v e St an d ar d s Re v i e w